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-rw-r--r--memchr.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/memchr.c b/memchr.c
new file mode 100644
index 0000000..ec05235
--- /dev/null
+++ b/memchr.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <string.h>
+
+int main()
+{
+ char *ptr;
+ char str[] = "test";
+
+ ptr = memchr(str ,'s', strlen(str));
+ if (ptr != NULL) {
+ printf("文字「s」の場所: %ld\n", ptr - str + 1);
+ } else {
+ printf("文字「s」は見つかりませんでした。\n");
+ }
+ // => 文字「s」の場所: 3
+}