problem 43

#include <stdio.h>

int prime(int n) {
    int count = 0;
    for (int i = 1; i <= n; i++) {
        if (n % i == 0) count++;
    }
    if (count == 2) return 1;
    else return 0;
}

int main() {
    int n;
    printf("Enter the number: ");
    scanf("%d", &n);
    int result = prime(n);
    printf("%d", result);
    return 0;
}

Enter the number: