#include #define xstr(s) #s #define str(s) xstr(s) #define MAIN(s) \ int main() \ { \ char *before = "#include \n#define xstr(s) #s\n#define str(s) xstr(s)\n#define MAIN(s) "; \ char *quine = s; \ char *after = "\n/*\n comment\n*/\nMAIN(str(MAIN(s)))\n"; \ FILE *file = fopen("Grace_kid.c", "w"); \ fprintf(file, "%s%s%s", before, quine, after); \ fclose(file); \ return 0; \ } /* comment */ MAIN(str(MAIN(s)))