c++ passing a string literal instead of a const std::string&?

Question

I have the following code which compiles with no warnings (-Wall -pedantic) with g++

#include 
#include 

using namespace std;

cla         


        

Answer 1

Extending on the answers given before: If you want to avoid the copy of the data, you can change the member and constructor parameter of Foo to const char*.

class Foo
{
public:
    Foo(const char* s) : str(s)
    { }

    void print()
    {
        cout << str << endl;
    }

private:
    const char* str;
};


class Bar
{
public:

    void stuff()
    {
        Foo o("werd");
        o.print();
    }
};


int main(int argc, char **argv)
{
    Bar b;
    b.stuff();

    return 0;
}