[Update] initialize buffer

109062273_cli.cpp

@@ -71,7 +71,8 @@ int main(int argc, char const *argv[]) {
         };
 
         // receive server response
-        char buffer[BUFFER_SIZE] = {0};
+        char buffer[BUFFER_SIZE];
+        memset(buffer, 0, sizeof(buffer));
         int size = recv(sockfd, buffer, sizeof(buffer), 0);
         if (size <= 0) {
             cout << "Connection ended." << endl;