From fab26582abedc53175117287ac925bb88e3b5ff3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=AB=8F=E8=A8=AA=E5=AD=90?= <suwako@076.moe>
Date: Fri, 21 Jun 2024 23:46:01 +0900
Subject: [PATCH] =?UTF-8?q?=E3=81=8A=E3=81=A1=E3=82=93=E3=81=A1=E3=82=93?=
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---
 CHANGELOG.md |  2 +-
 main.c       | 19 ++++++++++++++++---
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d339f8a..4663fde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,2 +1,2 @@
-# 0.0.1
+# 0.1.0
 * 開始
diff --git a/main.c b/main.c
index ae74df7..4938fe4 100644
--- a/main.c
+++ b/main.c
@@ -23,13 +23,26 @@
 #include "src/storage.h"
 
 const char *sofname = "farfetch";
-const char *version = "0.0.1";
+const char *version = "0.1.0";
+const char *avalopt = "s";
+
+void usage() {
+  printf("%s-%s\nusage: %s [-%s]\n", sofname, version, sofname, avalopt);
+}
 
 int main(int argc, char *argv[]) {
   int lc = 0;
   int issmall = 0;
-  if (argc == 2 && strncmp(argv[1], "-s", strlen("-s")) == 0) {
-    issmall = 1;
+  if (argc == 2) {
+    if (strncmp(argv[1], "-s", 2) == 0) {
+      issmall = 1;
+    } else {
+      usage();
+      return 1;
+    }
+  } else if (argc > 2) {
+    usage();
+    return 1;
   }
 #if defined(__OpenBSD__)
 #include "src/logo/openbsd.h"