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Basic
Switch Case
Goto
Operators
if Statement
Nested if
While Loop
For Loop
Patterns
Array
2D Array
String Function Example
Pointers
Recursion Function
Structure
Excersises
Others



Check Given Number is Prime or Not


C program to Check Whether a Number is Prime or Not.

Example : pgm.c

#include<stdio.h>
int main(){
    int i=2,n,s=0;
    printf("\nEnter the Number : ");
    scanf("%d",&n);
    while(i<=(n/2)){
        if(n%i==0)
        {
            s=1;
            break;
        }
        i++;
    }
    if(s==0)
        printf("\n%d is Prime Number",n);
    else
        printf("\n%d is Not a Prime",n);
    return 0;
}

Output:

Enter the Number : 11
11 is Prime Number