I’ve trying to get this to work, but I’m unable to find anything wrong. Does anybody know why it’s not working?
#include <iostream>
using namespace std;
bool isprime(int n)
{
if (n <= 1) {
return false;
}
if (n <= 3) {
return true;
}
if (n % 2 == 0 || n % 3 == 0) {
return false;
}
for (int i = 5; i*i <= n; i = i + 6) {
if (n%i == 0 || n % (i + 2) == 0) {
return false;
}
}
return true;
}
void primes(int num1, int num2) {
for (int i = num1; i <= num2; i++) {
if (isprime(i)) {
cout << i << endl;
}
}
}
int main() {
int size;
cin >> size;
int num1;
int num2;
for (int i = 0; i <= size; i++) {
cin >> num1 >> num2;
primes(num1, num2);
}
return 0;
}