770. 单词替换

https://www.acwing.com/problem/content/submission/code_detail/6827022/

AcWing/770/770.cpp

@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    string s, s1, s2;
+    getline(cin, s);
+    stringstream ss;
+    ss << s;
+    cin >> s1 >> s2;
+    while (ss >> s) {
+        if (s == s1) {
+            cout << s2 << ' ';
+        } else {
+            cout << s << ' ';
+        }
+    }
+    cout << endl;
+    return 0;
+}