A standard way for getting variable name at compile time

Question

Is there some way in C++11 or higher to achieve a similar behavior to:

int some_int;
std::string x=variable_name::value; //Theoretical code 
std:         


        

Answer 1

As follows from the comments, you need it for passing into a function both the value of the variable and its name. This must be done with the help of a macro:

#include 

template
void foo(T var, const char* varname)
{
    std::cout << varname << "=" << var << std::endl;
}

#define FOO(var) foo(var, #var)

int main()
{
    int i = 123;
    double d = 45.67;
    std::string s = "qwerty";

    FOO(i);
    FOO(d);
    FOO(s);
    return 0;
}

Output:

i=123
d=45.67
s=qwerty