Question

C Program to Check Whether a Number is Prime Number or Not using c function

Answer 1

#include <stdio.h>

#include <conio.h>

void main()

{

int num,res=0;

clrscr();

printf("\nENTER A NUMBER: ");

scanf("%d",&num);

res=prime(num);

if(res==0)

printf("\n%d IS A PRIME NUMBER",num);

else

printf("\n%d IS NOT A PRIME NUMBER",num);

getch();

}

int prime(int n)

{

int i;

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

{

if(n%i!=0)

continue;

else

return 1;

}

return 0;

}