769. 替换字符

https://www.acwing.com/problem/content/submission/code_detail/6944024/

AcWing/769/769.cpp

@@ -0,0 +1,21 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    string s;
+    cin >> s;
+
+    char op;
+    cin >> op;
+
+    for (char c : s) {
+        if (c != op) {
+            cout << c;
+        } else {
+            cout << '#';
+        }
+    }
+
+    return 0;
+}