Boolean Data Type

              
1
            
bool alive = true;

              
123456789101112
            
#include <iostream>

int main()
{
    bool istrue = true;
    bool obv = (5 > 0);
    bool wrong = (2 * 2 == 5);
    
    std::cout << istrue << std::endl;
    std::cout << obv << std::endl;
    std::cout << wrong << std::endl;
}

              
123456789
            
#include <iostream>

int main()
{
    bool istrue = true;
    
    std::cout << istrue << std::endl;
    std::cout << !istrue << std::endl;
}

              
123456789101112
            
#include <iostream>

int main()
{
    bool b = true;
    
    if (b)
      std::cout << "b is true" << std::endl;
      
    if (1 > 0)
      std::cout << "1 is greater than 0" << std::endl;
}