OpenMicro Labs Technical blog for my memory - From Chip to Cloud

#include <iostream>

 

//make function factory and use it

#define FUNCTION(name, a) int fun_##name() { return a;}

 

FUNCTION(abcd, 12);

FUNCTION(fff, 2);

FUNCTION(kkk, 23);

 

#undef FUNCTION

#define FUNCTION 34

#define OUTPUT(a) std::cout << #a << std::endl

 

int main()

{

    std::cout << “abcd: “ << fun_abcd() << std::endl;

    std::cout << “fff: “ << fun_fff() << std::endl;

    std::cout << “kkk: “ << fun_kkk() << std::endl;

    std::cout << FUNCTION << std::endl;

    OUTPUT(million);               //note the lack of quotes

 

    return 0;

}

Output:

abcd: 12

fff: 2

kkk: 23

34

million