768. 忽略大小写比较字符串大小

https://www.acwing.com/problem/content/submission/code_detail/6864516/

AcWing/768/768.cpp

@@ -0,0 +1,13 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    string s1, s2;
+    getline(cin, s1);
+    getline(cin, s2);
+    transform(s1.begin(), s1.end(), s1.begin(), ::tolower);
+    transform(s2.begin(), s2.end(), s2.begin(), ::tolower);
+    cout << (s1 < s2 ? '<' : (s1 == s2 ? '=' : '>')) << endl;
+    return 0;
+}