Renaming variables in C-CodePudding

I want to know if a variable content can be used as variable name. Example below:

int a;
string b = "nombre";

I'm asking if "nombre" can replace "a" as variable name.

CodePudding user response：

If you want to be able to map strings to numeric values, you could create a map object:

#include <unordered_map>
#include <string>
#include <iostream>

int main()
{
    std::unordered_map<std::string, int> vars {
        { "nombre",      5 },
        { "otro_nombre", 3 },
    };
    std::cout << vars["nombre"] << ' ' << vars["otro_nombre"] 
        << " = " << (vars["nombre"]   vars["otro_nombre"]);
}

This yields:

5 3 = 8

on the output stream. See it working on GodBolt.

CodePudding user response：

You can use references to create an alias for an already existing variables, if this is what you're looking for.

int a = 5;
int& nombre = a; //nombre is now an alias for a