Variables of different data types

#include <iostream> 

int main() {

    int i = 42;       // Integer variable     
    float fl = 3.14f;     // Floating-point variable   
    char c = 'A';  
    bool b = true;                     
    std::cout << "Integer variable: " << i << std::endl;
    std::cout << "Float variable: " << fl << std::endl;
    std::cout << "Character variable: " << c << std::endl;
    std::cout << "Boolean variable: " << b << std::endl;

    return 0; 
}