字符串操作

D.cpp

@@ -0,0 +1,19 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+	string s;
+	cin >> s;
+	for(int i = 0; i < s.size(); i++){
+		if(isalpha(s[i])){
+			if(islower(s[i])){
+				int t = s[i] - 'a' + 1;
+				s[i] = 'a' + 26 - t;
+			}else{
+				int t = s[i] - 'A' + 1;
+				s[i] = 'A' + 26 - t;
+			}
+		}
+	}
+	cout << s << endl;
+	return 0;
+}