PROGRAM FOR PRIME NO- C Language

/*PROGRAM FOR PRIME NO.*/

#include<stdio.h>

#include<conio.h>

void main()

{

int i,flag=0,n;

clrscr();

printf("Enter the no.::");

scanf("%d",&n);

for (i=2;i<=n/2;i++)

{

if(n%i==0)

{

printf("Not prime");

}

flag==1;

break;

}

if(flag==0)

{

printf("Prime");

}

getch();

}

/* ***********************OUTPUT***************************

Enter the no.::17

Prime*/