Features of C Language

 

Features of “C” Language

1. It is robust language because of rich set of binary in – function
2. It is efficient and fast because of its variant data-types and powerful operation.
3. It is highly Portable i.e., programs written in one computer can be run on another
4. It is well suited for structure program, thus allows the user to think about the problem in the terms of functional blocks.
5. Debugging, testing and maintenance is easy
6. ability to extend itself, we can continuously add our own functions to the program.

Complier : This reads the entire source program and converts it to the object code. It provides error not of one line, but errors of the entire program. It executes as a whole and it is fast
Interpreter : It reads only one line of a source program at a time and converts it into an object code. In case of errors/same will be indicated instantly. It executes line by line and it is slow. Linker is a function which links up the files that in present in the operating system, it also links the files for the hardware and makes the system ready for executing.
Preprocessor : This is a program, that processes the source program before it is passed on to the compiler. The program typed in the editor is the source code to the preprocessor, then it passed the source code to the compiler. It is not necessary to write program with preprocessor & activity
Preprocessor directories are always initialize at the beginning of the program. it begins with the symbol (#) hash. It place before the main() function
Eg: # include <station>
# define PI 3.14
Character Set : The characters that can be used to form words and expressions depends upon the computer to which the program is run
The Characters in C are
1. Letters A-X, a-z, both upper and lower
2. Digits 0-9
3. Special character, +,-,*,”,;,./,
4. which spaces newline, horizontal tab;,carriage return ,blank space

Binary Operators In C Language

 

Binary Operators In C Language

If any operation perform on two operands is known as binary operators .These are classified into following types

1. Arithmetic
2. Assignment
3. Relational
4. Logical
5. Bitwise

Arithmetic Operators : If any operation perform on Arithmetic values is known as arithmetic operators .These are classified into following types

Operator	Example
+ (Addition)	a+b
- (Substruction)	a-b
* (Multiplication)	a*b
/ (Division)	a/b
% (Modular Division)	a%b

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x,y,z;
printf("Enter x ,y values");
scanf("%d%d",&x,&y);
z=x+y;
printf("Addition is %d",z);
getch();
}
 

Assignment Operators : Assignment operators are used to assign the values to the variable or assign the variable to variable .These are classified into following types

Operator	Example	Same as
=	a=b	a=b
+=	a+=b	a=a+b
-=	a-=b	a=a-b
*=	a*=b	a=a*b
/=	a/=b	a=a/b
%=	a%=b	a=a%b

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x,y;
printf("Enter x ,y values");
scanf("%d%d",&x,&y);
x=x+y;
printf("Addition is %d",x);
getch();
}
 

Relational Operators : Relational operators are used to check the relation between two variables .These are classified into following types

Operator	Example
==	a==b
>	a>b
<	a<b
>=	a>=b
<=	a<=b
!=	a!=b

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x,y,z;
printf("Enter x ,y values");
scanf("%d%d",&x,&y);
z=x>y;
printf("The Relation of x>y is %d",z);
getch();
}
 

Nore :Relational operators are used in conditional statements only



Logical Operators : Logical operators are used to combine the morethan one condition .These are classified into following types

Operator	Example
Logical AND &&	a>b && a>c
Logical OR ||	a>b || a>c
Logical NOT !	!(a>b && a>c)

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x,y,z,p;
printf("Enter x , y, z values");
scanf("%d%d%d",&x,&y,&z);
p=(x>y && x>z);
printf("The Logical AND is %d",p);
getch();
}
 

Nore :Logical operators are used in conditional statements only


Bitwise Operators : Bitwise operators are used to perform any operation on binary values .These are classified into following types

Operator	Example
Bitwise AND &	a&b
Bitwise OR |	a|b
Bitwise CAP ^	a^b
Bitwise NAGETION ~	~a
Bitwise LEFT SHIFT <<	a<<b
Bitwise Right SHIFT >>	a>>b

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x,y,z;
printf("Enter x , y values");
scanf("%d%d",&x,&y);
z=x&y;
printf("The Bitwise AND is %d",z);
getch();
}

Fundamentals of C Language

 

“C” Tokens

Individual words and punctuation marks are characters. In a “C” program the smallest individual units are known as “C” tokens. It has 6types of token‟s

1. Keywords
2. Identifiers
3. Constants
4. Variables
5. Data types
6. Type def

Keywords
Keyword is an predefined word ,Which is an already defined by the C-Develphers
Ex:int ,float,char,if etc...
C-Language contains 32 Keywords

Constants
Constant is an identifier whose value can't be changed.
Ex:int x=10;
Here 10 is a Constant
x is a Variable
int is a Datatype
These constants are classified into 2 types

1. Numerical Constants
2. Character Constants

• Numerical Constants:
Numerical Constants menans Numbers these are classified into 2 types
1. Integer Constants
2. Real Constants
Integer Constants: Integer constants means + or -(minus) values
Ex:int x=10;
     int y=-24;
Real Constants Real constants means floating values
Ex:float x=1.0;

• Character Constants
Character constants menas Characters these are classified into 2 types
1. Single character constants
2. String character constants
Single character Constants: If any character or symbol or number enclosed with single quotation
Ex:char ch='a'
     char ch='@';
     char ch='4';
String character Constants Group of character or symblos or numbers enclosed with double quotation
Ex:char ch[20]="varshini";

Variable

Variable
   Variable is an identifier whose value can be changed or which holds the data
Ex:int x=12;
          x=20;
Variable Declaration Rules:

1. Variable name must be start with alphabet or underscore or doller symbol
Ex:int age=12;
     int _age=24;
     int $age=45;

2. The max length of the variable name is upto 32 characcters
3. If variable name contains morethan one word ,The second word onwords first letter should be uppercase letter
Ex:int studentAge=12;
4. No spaces are allowed at the middle of the variable declaration
Ex:int student Age=24; (Invalid)
5. If variable value contains constant value that variable name must be uppercase
Ex: const float PI=3.14
       const int AGE=24;
6. If constant variablename contains morethan one word ,It should be separated with underscore
Ex:const int STUDENT_AGE=24;
7. All keywords are lowercase letters
8. We should not take keyword as a variable name
Ex: int if=12 (invalid) Here if is a keyword

Variable Defination Types

1. Initilization
2. Declaration
3. Assignment

Initilization:

It menas initilize the some value to the variable
Ex:int x=12; here 12 is initilize to the x

Declaration

In the Declaration no value initilize to the variable
Ex:int x;

Assignment

In the assignment assign the value to the variable or assign variable to the variable
Ex:int x;
     x=12;(value to variable)
     int y;
     y=x;(variable to variable)

Datatypes

Datatypes are used to identify the type of data or which allocates the sufficient memory space for the varables. These Datatypes are classified into following types:

1. Primitive Datatypes
2. Derived Datatypes
3. Userdefined Datatypes

Primitive Datatypes:

Primitive datatypes are used to store the single value at a time
Ex:int x=12;
    int y=12,13;(invalid) These Primitive datatypes are classified into following types

1. Integer datatype
2. Floating point datatypes
3. Character datatypes
4. Void Datatypes

Derived Datatypes:

These are used to store the morethan one value similar type
Ex:Arrays--- int marks[]={12,12,12,12,12,12}

Userdefined Datatypes:

These are used to store the morethan one value dissimilar type
Ex:structure,union

Type def : Defined as type definition by using typedef we can create new datatype. Typedef type data _ame;
Type ---- datatype
Dataname---- Name of that type

Typedef In C Language

 

 Typedef In C Language

Creating a new datatype using existing datatype is known as typedef

typedef int BYTE;
Here Byte is new Datatype 
 

#include <stdio.h>
#include <string.h>
#include <conio.h>
 
typedef struct Books {
   char title[150];
   char author[150];
   char subject[200];
   int book_id;
} Book;
 
int main( ) {

   Book book;
 
   strcpy( book.title, "Java Programming");
   strcpy( book.author, "Dennis Ritchie"); 
   strcpy( book.subject, "java Programming Tutorial");
   book.book_id = 1224;
 
   printf( "Book title : %s\n", book.title);
   printf( "Book author : %s\n", book.author);
   printf( "Book subject : %s\n", book.subject);
   printf( "Book book_id : %d\n", book.book_id);

   getch();
}

typedef vs #define #define is a C-directive which is also used to define the aliases names for various datatypes.
It is Similar to typedef but following differences.
typedef is limited to giving symbolic names to types only where as #define can be used to define alias for values as well, q., you can define 1 as ONE etc.
typedef interpretation is performed by the compiler whereas #define statements are processed by the pre-processor.

#include <conio.h>
#include <stdio.h>
 
#define TRUE  1
#define FALSE 0
 
void main( ) {
   printf( "Value of TRUE : %d\n", TRUE);
   printf( "Value of FALSE : %d\n", FALSE);

   getch();
}

Control Statements In C-Language

 

Control Statements In C-Language

Control statements are used to random execution of the program .These are classified into following types

1. Conditional Statements
2. Looping Statements
3. Unconditional Statements

Conditional Statements

Conditional Statements are used to check the condition whether it is true or false.These are classified into following types
1. if Condition
2. if else Condition
3. else if Condition
4. nested if Condition
5. switch Expression
1. if Condition:
if is a keyword in c language which is used to execute one block of statements by neglecting some other statements
Syntax:


if(Condition)
{
------
------
}

In the above syntax
if Condition is true the statements of if block is execute
if Condition is false the if block is terminated

2.if else Condition:

if else is a keyword in c language which is used to execute one block of statements between two blocks.

if(Condition)
{
------
------
}
else
{
------
------
}

In the above syntax
if Condition is true the statements of if block is execute
if Condition is false the statements of else block is execute

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x;
printf("Enter x value");
scanf("%d",&x);
if(x%2==0)
{
printf("Even Number");
}
else
{
printf("Odd Number");
}
getch();
}

3.else if Condition:

else if is a keyword in c language which is used to execute one block of statements among multiple blocks.

if(Condition)
{
------
------
}
else if(Condition)
{
------
------
}
else if(Condition)
{
------
------
}
else if(Condition)
{
------
------
}
.
.
.
.
else
{
------
------
}

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int age;
printf("Enter your age");
scanf("%d",&age);
if(age>0 && age<=12)
{
printf("You are Child");
}
else if(age>12 && age<=19)
{
printf("You are Teen");
}
else if(age>19 && age<=40)
{
printf("You are Younger");
}
else if(age>40 && age<=80)
{
printf("You are Old");
}
else if(age>80 && age<=`00)
{
printf("You are Too Old");
}
else
{
printf("Invalid age");
}
getch();
}

4.Nested if Condition:

One if condition with in another if condition is known as nested if.

if(Condition)
{
    if(Condition)
    {
    ......
    ......
    }
    else
    {
    ......
    ......
    }
}
else
{
------
------
}

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x;
printf("Enter x value");
scanf("%d",&x);
if(x>0)
{
    if(x%2==0)
    {
    printf("Even Number");
    }
    else
    {
    printf("Odd Number");
    }
}
else
{
printf("Please Enter Positive values");
}
getch();
}

5.Switch Expression:

switch is a keyword in c language, which is used to execute one block of statements among multiple blocks.Here switch is a choice Expression.
Syntax :

switch(choice)
{
case 1:
	Statements;
        break;
case 2:
	Statements;
        break;
case 3:
	Statements;
        break;
      .
      .
      .
      .
      .
default:
	Statements;
}

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
int x,y;
printf("Enter x value");
scanf("%d",&x);
y=x%2;
switch(y)
{
case 0:
	printf("Even number");
    break;
case 1:
	printf("Odd Number");
    break;
defalut:
	printf("Invalid Choice");
}
getch();
}

Variable Arguments in C-Language

 

Variable Arguments in  C-Language

Variable Arguments

• Variable length argument is a feature that allows a function to receive any number of arguments.
• There are situations where we want a function to handle variable number of arguments according to requirement.

1.  Sum of given numbers.
2.  Minimum of given numbers. and many more.

Variable number of arguments are represented by three dotes (…)
Syntax:

    datatype functionname(datatype,...)
    {
    ...
    ...
    }
    
    void main()
    {
    functionname(v1,v2,v3);
    functionname(v1,v2,v3,v4,v5);
    }

/* C Variable Length Arguments - This program
 * demonstrates variable length arguments in C
 */

#include<stdio.h>
#include<stdarg.h>
#include<conio.h>

int avg(int num, ...)
{
	va_list valist;
	int sum = 0;
	int i;

	// initializing valist for num number of arguments
	va_start(valist, num);

	// now accessing all the arguments that is assigned to valist
	for(i=0; i<num; i++)
	{
		sum = sum + va_arg(valist, int);
	}

	// now cleaning the memory reserved for the valist
	va_end(valist);

	return sum/num;
}

void main()
{
	int num1=10, num2=20, num3=30;
	clrscr();

	printf("The average is %d", avg(3, num1, num2, num3));

	getch();
}

Output:
The average is 20

Files In C Language

 

Files In C Language

File : File is a collection of data or information which is used to store the data permanently
Types of files:
1.Text Files
2.Document Files
3.Audio Files
4.Video Files
5.PDF Files ...


File Operations
1.Open or create a file
2.Write the data into the file
3.Read the data from the file
4.close a file
Open file

FILE *fopen( const char * filename, const char * mode );

Here, filename is a string literal, which you will use to name your file, and access mode can have one of the following values −

Sno	Mode	Description
1	r	Opens an existing text file for reading purpose.
2	w	Opens a text file for writing. If it does not exist, then a new file is created. Here your program will start writing content from the beginning of the file.
3	a	Opens a text file for writing in appending mode. If it does not exist, then a new file is created. Here your program will start appending content in the existing file content.
4	r+	Opens a text file for both reading and writing.
5	w+	Opens a text file for both reading and writing. It first truncates the file to zero length if it exists, otherwise creates a file if it does not exist.
6	a+	Opens a text file for both reading and writing. It creates the file if it does not exist. The reading will start from the beginning but writing can only be appended.

If you are going to handle binary files, then you will use following access modes instead of the above mentioned ones −

  "rb", "wb", "ab", "rb+", "r+b", "wb+", "w+b", "ab+", "a+b"

Closing File:

int fclose( FILE *fp );
Close a file using fclose( ) function

Writing a File:

fprintf(file,"Data")

fputs("Data",File)

Program:

#include <stdio.h>
#include <conio.h>
void main() {
   FILE *fp;
   fp = fopen("test.txt", "w+");
   fprintf(fp, "This is testing File\n");
   fputs("This is testing File\n", fp);
   fclose(fp);
   printf("Success");
   getch();
}

Reading a File

fscanf(File,"type of data",variable);

fgets(variable,size, FILE)

Program

#include <stdio.h>
#include <conio.h>

void main() {

   FILE *fp;
   char x[255];

   fp = fopen("test.txt", "r");
   fscanf(fp, "%s", x);
   printf("1 : %s\n", x );

   fgets(x, 255, (FILE*)fp);
   printf("2: %s\n", x );
   
   fclose(fp);
   printf("Success");
   getch();

}

Functions in C Language

 

C Functions

Function is a collection of statements used to perform specific operation.In C Language these function are classified into following types

1. predefined Function
2. UserDefined Function

PreDefined Functions

If any function already designed by the C Develophers is known as predefined functions .These are classified into following types
1. printf()
2. Scanf()
3. getch()
4. clrscr()
5. sizeof() ...ete

UserDefined Function

If any function designed by the programmer is known as user defined function
Syntax

  returntype functionname(list of paramers/no parameters);    //function Declaration
  returntype functionname(list of paramers/no parameters)      //function Body
  {
  ....
  ....
  ....
  ....
  }
  

in the above syntax first you declare the function.Ofter you declare the function body
These functions are classified into fallowing types

1. Parametarized Function
2. NoParametarized Function

Parametarized Function:

If any function signature contains list of parameters is known as Parametarized Function.
Syntax

  returntype functionname(datatype variable1,datatype variable2,....);    //function Declaration
  returntype functionname(datatype variable1,datatype variable2,....)      //function Body
  {
  ....
  ....
  ....
  ....
  }
  

NoParametarized Function:

If any function signature does not contains list of parameters is known as NoParametarized Function.
Syntax

  returntype functionname();    //function Declaration
  returntype functionname()     //function Body
  {
  ....
  ....
  ....
  ....
  }
  

Based on the return type these functions are classified into following types

1. No Returntype With NoParametarized Function
2. No Returntype With Parametarized Function
3. Returntype With NoParametarized Function
4. Returntype With Parametarized Function

No Returntype With NoParametarized Function

#include<stdio.h>
#include<conio.h>
void max();
void max()
{
int x,y;
printf("Enter x,y values");
scanf("%d%d",&x,&y);
if(x>y)
{
printf("x is max");
}
else
{
prinf("y is max");
}
};
void main()
{
clrscr();
max();
getch();
}
 

No Returntype With Parametarized Function

#include<stdio.h>
#include<conio.h>
void max(int x,int y);
void max(int x,int y)
{

if(x>y)
{
printf("x is max");
}
else
{
prinf("y is max");
}
};
void main()
{
clrscr();
int x,y;
printf("Enter x,y values");
scanf("%d%d",&x,&y);
max(x,y);
getch();
}
 

Returntype With NoParametarized Function

#include<stdio.h>
#include<conio.h>
int max();
int max()
{
int x,y;
printf("Enter x,y values");
scanf("%d%d",&x,&y);
if(x>y)
{
return x;
}
else
{
return y;
}
};
void main()
{
clrscr();
printf("%d",max());
getch();
}
 

Returntype With Parametarized Function

#include<stdio.h>
#include<conio.h>
int  max(int x,int y);
int  max(int x,int y)
{

if(x>y)
{
return x;
}
else
{
return y;
}
};
void main()
{
clrscr();
int x,y;
printf("Enter x,y values");
scanf("%d%d",&x,&y);
printf("%d",max(x,y));
getch();
}
 

Function Calling

Function Calling Syntax :
functionname(arguments,...);
Example: max(10,20)
Here Max is a functionname
10,20 are the arguments

C - Recursion

The C programming language supports recursion, i.e., a function to call itself. But while using recursion, programmers need to be careful to define an exit condition from the function, otherwise it will go into an infinite loop.
Syntax :

 void recursion() {
   recursion(); /* function calls itself */
}

int main() {
   recursion();
}
 

#include<stdio.h>
#include<conio.h>
int factorial(int i) {

   if(i <= 1) {
      return 1;
   }
   return i * factorial(i - 1);
}

void  main() {
   int i = 5;
   printf("Factorial of %d is %d//n", i, factorial(i));
   getch();
}

Memory Management in C-Language

 

  Memory Management  

Dynamic Memory Allocation in C

• The process of allocating memory at runtime is known as dynamic memory allocation.
• Library routines known as memory management functions are used for allocating and freeing memory during execution of a program.
• These functions are defined in stdlib.h header file.

Function	Description
malloc()	allocates requested size of bytes and returns a void pointer pointing to the first byte of the allocated space
calloc()	allocates space for an array of elements, initialize them to zero and then returns a void pointer to the memory
Free	releases previously allocated memory
realloc	modify the size of previously allocated space

Memory Allocation Process

• Global variables, static variables and program instructions get their memory in permanent storage area whereas local variables are stored in a memory area called Stack.
• The memory space between these two region is known as Heap area. This region is used for dynamic memory allocation during execution of the program. The size of heap keep changing.

Allocating block of Memory

• malloc() function is used for allocating block of memory at runtime.
• This function reserves a block of memory of the given size and returns a pointer of type void.
• This means that we can assign it to any type of pointer using typecasting.
• If it fails to allocate enough space as specified, it returns a NULL pointer.

Syntax:

    void* malloc(byte-size)

calloc()

• It is another memory allocation function that is used for allocating memory at runtime.
• calloc function is normally used for allocating memory to derived data types such as arrays and structures.
• If it fails to allocate enough space as specified, it returns a NULL pointer.

Syntax:

void *calloc(number of items, element-size)

realloc()

• realloc() changes memory size that is already allocated dynamically to a variable.

Syntax:

    void* realloc(pointer, new-size)

String Palindrome Program in Python

                  

    String  Palindrome Program in Python

Examples: 
Input : malayalam
Output : Yes

Input : MSK
Output : No

Program:

def checkPalindrome(str):

    return str == str[::-1]

 

 

# Driver code

s = "malayalam"

ans = checkPalindrome(s)

 

if ans:

    print("Palindrome")

else:

    print("Not Palindrome")

OutPut:

Palindrome

Area Of Equilateral Triangle In Python

                 

    Area Of Equilateral Triangle In Python

This is how an equilateral triangle looks like:
As you can see, this is an equilateral triangle with a side length of “a” units and a height of “h” units.
The altitude of an equilateral triangle cuts the opposite side at right angles. So, by using the Pythagoras theorem, we can calculate the height of an equilateral triangle to be sqrt(3/4)a.
Thus, the area of an equilateral triangle = 1/2 * sqrt (3/4)a * a
Area = (sqrt 3)/4 * a^2

Program:

import math

a=float(input("enter side of the triangle: "));

area=(math.sqrt(3)/4)*a*a;

print("Area Of Equilateral Triangle ",area);

OutPut:

enter side of the triangle: 10

Area Of Equilateral Triangle  43.301270189221924

Simple Calculator Program In Python

                

    Simple Calculator Program In Python

Program:

# define functions  

def add(x, y):  

   

   return x + y 

def sub(x, y): 

   

   return x - y 

def mul(x, y): 

   

   return x * y 

def div(x, y): 

   

   return x / y  

# take input from the user  

print("Select operation.")  

print("1.Addition")  

print("2.Subtraction")  

print("3.Multiplication")  

print("4.Division")  

  

choice = input("Enter choice(1/2/3/4):")  

  

num1 = int(input("Enter first number: "))  

num2 = int(input("Enter second number: "))  

  

if choice == '1':  

   print(num1,"+",num2,"=", add(num1,num2))  

  

elif choice == '2':  

   print(num1,"-",num2,"=", sub(num1,num2))  

  

elif choice == '3':  

   print(num1,"*",num2,"=", mul(num1,num2))  

elif choice == '4':  

   print(num1,"/",num2,"=", div(num1,num2))  

else:  

   print("Invalid input")  

OutPut:

Select operation.

1.Addition

2.Subtraction

3.Multiplication

4.Division

Enter choice(1/2/3/4):2

Enter first number: 12

Enter second number: 23

12 - 23 = -11

Check whether a number can be expressed as a sum of two prime numbers In Python

               

    Check whether a number can be expressed as a sum of two prime numbers In Python

For example, the number 34 is given as input.

34 = 3 + 31
34 = 5 + 29
34 = 11 + 23
34 = 17 + 17

Program:

# Python program to check whether a number can be expressed as a sum of two prime numbers

def prime(n):

    isPrime = 1

    for i in range (2,int(n/2),1):

        if(n % i == 0):

            isPrime = 0

            break

    return isPrime

n = int(input("Enter a number : "))

f = 0;

i = 2

for i in range (2,int(n/2),1):

    if(prime(i) == 1):

        if(prime(n-i) == 1):

            print(n,"can be expressed as the sum of",i,"and",n-i)

            f = 1;

if (f == 0):

    print(n,"cannot be expressed as the sum of two prime numbers")

OutPut:

Enter a number : 34

34 can be expressed as the sum of 3 and 31

34 can be expressed as the sum of 5 and 29

34 can be expressed as the sum of 11 and 23

Enter a number : 35

35 can be expressed as the sum of 4 and 31

Enter a number : 37

37 cannot be expressed as the sum of two prime numbers

replace all 0's with 1 in a given integer In Python

              

        Replace all 0's with 1 in a given integer In Python

Input: 102405
Output: 112415

Program:

# Python program to replace all 0’s with 1 in a given integer

def re(n):

    if (n == 0):

        return 0;

# Extract the last digit and change it if needed

    digit = n % 10

    if (digit == 0):

        digit = 1

    return re(int(n/10)) * 10 + digit

n = int(input("Enter the number : "))

print("Number after replacement : ",re(n))

OutPut:

Enter the number : 123034

Number after replacement :  123134

Python program to print the Armstrong numbers between the two intervals

             

        Python program to print the Armstrong numbers between the two intervals

An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. For example, 153  is an Armstrong

Program:

# Python program to print the Armstrong numbers between the two intervals

import math

n1 = int(input("Enter start value : "))

n2 = int(input("Enter end value : "))

result = 0

n = 0

for i in range(n1+1 ,n2,1):

    t2 = i

    t1 = i

    while (t1 != 0):

        t1 = int(t1/10)

        n = n + 1

    while (t2 != 0):

        remainder = t2 % 10

        result = result + math.pow(remainder, n)

        t2 = int(t2/10)

    if (result == i):

        print(i)

    n = 0

    result = 0

OutPut:

Enter start value : 100

Enter end value : 500

153

370

371

407

Enter start value : 200

Enter end value : 1000

370

371

407

Prime Number Program in Given Range in Python

  

         Prime Number Program in Given Range in Python

Prime number in C: Prime number is a number that is greater than 1 and divided by 1 or itself. In other words, prime numbers can't be divided by other numbers than itself or 1. For example 2, 3, 5, 7, 11, 13, 17, 19, 23.... are the prime numbers.

factors Program In Python

            

        Factors Program In Python

the factors of number 10 are
1 * 10 = 10
2 * 5 = 10
5* 2 = 10
10* 1 = 10

Program:

n = int(input("Enter a number : "))

count = 0

for i in range(1, n+1, 1):

    if(n % i == 0):

        count = count + 1

        print(i, end = " ")

print("\nTotal factors of",n," is :",count)

OutPut:

Enter a number : 10

1 2 5 10 

Total factors of 10 : 4

Enter a number : 20

1 2 4 5 10 20 

Total factors of 20  is : 6

Abundant number In Python

           

        Abundant number In Python

An abundant number is a number for which the sum of its proper divisors is greater than the
 number itself.
The divisors of 12 are 1, 2, 3, 4 and 6.
The sum of divisors of 12 is 16.
12 < 16.Hence, 12 is an abundant number.

Program:

n = int(input("Enter N Value"))

sum = 0

for i in range(1,n):

if(n % i == 0):

sum = sum + i

if(n < sum):

print("It is a Abundant Number")

else:

print("Not Abundant Number")

OutPut:

Enter N Value12

It is a Abundant Number

Enter N Value4

Not Abundant Number