#define _GNU_SOURCE /* for asprintf */
#include <stdlib.h> /* for free and system */
#include <string.h> /* for __FILE__ */
#include <stdio.h>
#define str(s) #s
#define xstr(s) str(s)
#define FT(s) int main() { char *before = "#define _GNU_SOURCE /* for asprintf */\n#include <stdlib.h> /* for free and system */\n#include <string.h> /* for __FILE__ */\n#include <stdio.h>\n#define str(s) #s\n#define xstr(s) str(s)\n#define FT(s) "; char *quine = s; char *after = "\nint i = %i;\nchar *file_name = %s%s;\nFT(xstr(FT(s)))\n"; if (i == 0) return 0; if ((strchr(file_name, '_')) != ((void*)0)) i--;char *kid_name; char *kid_name_c; char *after_expanded; char *cmd; asprintf(&kid_name, "Sully_%i", i); asprintf(&kid_name_c, "%s.c", kid_name); FILE *file = fopen(kid_name_c, "w"); asprintf(&after_expanded, after, i, "__FI", "LE__"); fprintf(file, "%s%s%s", before, quine, after_expanded); fclose(file); asprintf(&cmd, "clang %1$s -o %2$s ; ./%2$s", kid_name_c, kid_name); system(cmd); free(cmd); free(kid_name_c); free(kid_name); free(after_expanded); return 0; }
int i = 5;
char *file_name = __FILE__;
FT(xstr(FT(s)))