'commit'

TangDou/KaoShi/大小写转换.cpp

@@ -0,0 +1,14 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    string s;
+    cin >> s;
+    for (int i = s.size() - 1; i >= 0; i--)
+        if (s[i] >= 'A' && s[i] <= 'Z')
+            cout << s[i] + 32;
+        else
+            cout << s[i];
+    return 0;
+}