3. (E) Write a program to check whether the entered number is prime or not.

3. (E) Write a program to check whether the entered number is prime or not.

#include<stdio.h>
	int main() {
	int num, i, count = 0;
	printf("Enter a number:");
	scanf("%d", &num);
	for (i = 2; i <= num / 2; i++) {
	if (num % i == 0) {
	count++;
	break;
	}
	}
	if (count == 0)
	printf("%d is a prime number", num);
	else
	printf("%d is not a prime number", num);
	return 0;
	}