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Write a C++ Program to Check Prime Number By Creating a Function
PROGRAM: C++ Program to Check Prime Number By Creating a Function
/* C++ Program to Check Prime Number By Creating a Function */
#include <iostream>
using namespace std;
bool check_prime(int);
int main() {
int n;
cout << “Enter a positive integer: “;
cin >> n;
if (check_prime(n))
cout << n << ” is a prime number.”;
else
cout << n << ” is not a prime number.”;
return 0;
}
bool check_prime(int n) {
bool is_prime = true;
// 0 and 1 are not prime numbers
if (n == 0 || n == 1) {
is_prime = false;
}
for (int i = 2; i <= n / 2; ++i) {
if (n % i == 0) {
is_prime = false;
break;
}
}
return is_prime;
}
