Program to check whether an input number is prime or not.

program:-

#include<stdio.h>

#inclue<conio.h>

void main()

{

int n,i;

printf ("Enter a number");

scanf("%d",&n);

for(i=2;i<=n-1,i++)

{

if(n%i==0)

break;

}

if(i==n)

printf("number is prime number");

else

printf ("not prime");

getch();

}