converting a variable name to a string in C++

Question

I\'d like to output some data to a file. For example assume I have two vectors of doubles:

vector data1(10);
vector data2(10); 
         


        

Answer 1

You can use the preprocessor "stringify" # to do what you want:

#include 

#define PRINTER(name) printer(#name, (name))

void printer(char *name, int value) {
    printf("name: %s\tvalue: %d\n", name, value);
}

int main (int argc, char* argv[]) {
    int foo = 0;
    int bar = 1;

    PRINTER(foo);
    PRINTER(bar);

    return 0;
}


name: foo   value: 0
name: bar   value: 1

(Sorry for printf, I never got the hang of . But this should be enough.)