printf("%s", obj) //prints "some data"

#include <cstdio>



class Example{
public:
    operator int() const{
        return 5;
    }
    operator const char*() const{
        return m_text;
    }
private:
    const char* m_text = "5";
};

int main()
{
    Example e;
    std::printf("%dn", (int)e);
    std::printf("%sn", (const char*)e);
    return 0;
}