LearningCPP/main.cpp

#include <iostream>

int main()
{
    if(-1)
        std::cout << "-1 is true\n";
    if(2)
        std::cout << "2 is true\n";
    if(1)
        std::cout << "1 is true\n";
    if(!0)
        std::cout << "0 is false\n";
}