C++ if...else...else if

#include <iostream>

int main() {
    int num = 10;

    if (num > 0) {
        std::cout << "The number is positive." << std::endl;
    } else if (num < 0) {
        std::cout << "The number is negative." << std::endl;
    } else {
        std::cout << "The number is zero." << std::endl;
    }

    return 0;
}