I know it's a bad attempt but why we cannot edit the private member via the getter? class A { int a = 2; public: int GetA1() { return a; } int& GetA2() { return a; } int* GetA3() {...

I was studying about l-values and r-values but I am confused with this: #include<iostream> int& get_val(){ return 10; } int main(){ get_val() = 5; int a = get_val(); std::cou...

Having this: #include <iostream> #include <vector> class A{ std::vector<std::string> vec; public: std::string &save(std::string const&s){ vec.push_back(s); ...

I have a function f that takes a string as input. I usually want to provide a string literal, e.g., f("hello"). However, I want to implement another function g that builds upon f: std::strin...