#include #include #include enum ERROR{NO_ARGUMENTS, WRONG_ARGUMENT}; int print_error_message(enum ERROR error_type) { if (error_type == NO_ARGUMENTS) { fprintf(stderr,"cp: missing file operand\n"); // TODO: Maybe replace "cp" with argv[0]? fprintf(stderr,"Try cp --help for more information.\n"); return 0; } else if (error_type == WRONG_ARGUMENT) { fprintf(stderr, "cp: unrecognized option\n"); fprintf(stderr,"Try cp --help for more information.\n"); } return 0; } int print_help() { printf("HELP\n"); return 0; } int cp(char *argv[]){ printf("%s\n", argv[0]); open(); return 0; } int main(int argc, char *argv[]) { if (argc == 1) { print_error_message(NO_ARGUMENTS); return 1; } if (argc == 2) { if (strcmp(argv[1], "--help") == 0) { print_help(); return 0; } else { print_error_message(WRONG_ARGUMENT); return 2; } } if (argc == 3) { cp(argv); } return 0; }