From ce1d2ae68f137243af1f0f61f1da9c45ebc278d4 Mon Sep 17 00:00:00 2001
From: flykhan <liubo666666@outlook.com>
Date: Sun, 25 Jun 2023 16:59:08 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=9A=E4=B9=89=E5=87=BD=E6=95=B0,=20?=
 =?UTF-8?q?=E5=AE=9E=E7=8E=B0=E5=AD=97=E7=AC=A6=E4=B8=B2=E4=B8=AD=E6=9F=90?=
 =?UTF-8?q?=E4=B8=AA=E5=AD=97=E7=AC=A6=E7=9A=84=E6=9F=A5=E6=89=BE,=20?=
 =?UTF-8?q?=E5=B9=B6=E8=BF=94=E5=9B=9E=E5=AD=97=E7=AC=A6=E7=9A=84=E4=B8=8B?=
 =?UTF-8?q?=E6=A0=87=E6=88=96=20-1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day9/case5.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 day9/case5.cpp

diff --git a/day9/case5.cpp b/day9/case5.cpp
new file mode 100644
index 0000000..41a297e
--- /dev/null
+++ b/day9/case5.cpp
@@ -0,0 +1,26 @@
+// 定义函数, 实现字符串中某个字符的查找, 并返回字符的下标或 -1
+#include <iostream>
+
+using namespace std;
+int findCharAt(char str[], int size, char ch)
+{
+    for (int i = 0; i < size; i++)
+    {
+        if (str[i] == ch)
+            return i;
+        else if (str[i] == '\0' && str[i] != ch)
+            return -1;
+    }
+}
+
+int main()
+{
+    char str[] = "abcdefg";
+    char ch;
+    cout << "请输入要查找的字符: ";
+    cin >> ch;
+    int size = sizeof(str) / sizeof(str[0]);
+    int index = findCharAt(str, size, ch);
+    cout << "下标为: " << index << endl;
+    return 0;
+}
\ No newline at end of file