main01.cpp

#include <iostream>

int main () {
    // the most used form of lambdas without return type
    auto basicLambdaFunc0 = [] () { std::cout << "Hello, lambda0" << std::endl;};
    
    // omitting parameters
    auto basicLambdaFunc1 = [] { std::cout << "Hello, lambda1" << std::endl;};
    
    // the most detailed syntax
    auto basicLambdaFunc2 = [] (void) -> void { std::cout << "Hello, lambda2" << std::endl;};
    basicLambdaFunc0();
    basicLambdaFunc1();
    basicLambdaFunc2();
}