'Renaming variables in C++

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.

I'm trying to rename an object(like we rename files and folders).

c++variables


Solution 1:[1]

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.

Solution 2:[2]

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

Sources

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Source: Stack Overflow

Solution Source
Solution 1 einpoklum
Solution 2 havel06

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