strcmp(1): adds copyright header, formatting, removes unused #include

This commit is contained in:
Emma Tebibyte 2024-07-12 16:15:41 -06:00
parent 5d2872d050
commit 59de0262bd
Signed by untrusted user: emma
GPG Key ID: 06FA419A1698C270

View File

@ -1,5 +1,23 @@
/*
* Copyright (c) 2023 DTB <trinity@trinity.moe>
* Copyright (c) 20232024 Emma Tebibyte <emma@tebibyte.media>
* SPDX-License-Identifier: AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see https://www.gnu.org/licenses/.
*/
#include <stdio.h> /* fprintf(3), stderr */
#include <stdlib.h> /* EXIT_FAILURE */
#include <sysexits.h>
static char *program_name = "strcmp";
@ -8,17 +26,24 @@ int main(int argc, char *argv[]){
int i;
if (argc < 3) {
fprintf(stderr, "Usage: %s string string...\n",
argv[0] == NULL ? program_name : argv[0]);
fprintf(
stderr,
"Usage: %s string string...\n",
argv[0] == NULL ? program_name : argv[0]
);
return EX_USAGE;
}
for(; *argv[1] != '\0'; ++argv[1])
for(i = 2; i < argc; ++i)
if(*argv[i-1] > *argv[i])
for (; *argv[1] != '\0'; ++argv[1]) {
for(i = 2; i < argc; ++i) {
if (*argv[i-1] > *argv[i]) {
return 1;
else if(*argv[i-1] < *argv[i]++)
return -1; /* actually 255 */
return 0;
} else if (*argv[i-1] < *argv[i]++) {
return 255;
}
}
}
return EX_OK;
}