Question

The code is working in that it couts haha but it causes an error because it says:

Process returned -1073741819 <0xC0000005>

And a window pops up telling me if I would like to send an error message. Why is this?

#include <iostream>

using namespace std;

template <class A>

    A print( A a ) {
        cout << a;
    }

template <class T>

    class David {
        T a;
        public:
            David( T something ) : a( something ) {}
            void laugh() {
                print(a);
            }
    };

int main() {

    David <string> Do("Hahaha");

    Do.laugh();

}

Answer 1

template <class A>

    A print( A a ) {
        cout << a;
    }

It`s incorrect. No return value in function, so, compiler returns some garbage from stack.
And better i think will be this declaration

template<class A>
void print(const A& a) { cout << a; }