#include <stdio.h>Take integer as "97"int main() {int n, i, flag = 0;printf("Enter a positive integer: ");scanf("%d", &n);if (n == 0 || n == 1)flag = 1;for (i = 2; i <= n / 2; ++i) {if (n % i == 0) {flag = 1;break;}}if (flag == 0)printf("%d is a prime number.", n);elseprintf("%d is not a prime number.", n);return 0;}