Named parameters in C

namedparams.c

/* This is a way to make a function with named parameters in standard C99.
Most typical programmer errors (parameter typo, etc.) produce at least
somewhat reasonable compiler messages.

Unlike some other methods of doing this, this supports default parameters
which can be defined to any value, and does not require any cumbersome
syntax such as casts or struct accessors when calling the function.

Originally posted on 4chan /prog/.

-- Storlek */

#include <stdio.h>

int __madlib(int r, char *music, char *language, char *adjective)
{
    printf("I listen to %s while coding in %s because I am %s\n",
        music, language, adjective);
    return r;
}
#define madlib(r, ...) ({ \
    char *music = "Infected Mushroom", *language = "Java", *adjective = "1337"; \
    __VA_ARGS__; __madlib(r, music, language, adjective); })


int main(int argc, char **argv)
{
    return madlib(0, language = "C");
}

damn that's crazy