1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
#include <stdio.h> int main(int argc, char* argv[]) { int i; for (i = 1; i < argc; ++i) { if (argv[i][0] != '-') { fprintf(stdout, "%s:0:0: warning: message [checker]\n", argv[i]); break; } } fprintf(stderr, "1 warning generated.\n"); return 0; }