View Compilation Error

0_0_39349238_7544.cpp: In function 'std::string add(std::string, std::string)':
0_0_39349238_7544.cpp:12:42: error: expected statement at end of input
   12 |         for (i = 0; i < L1 && i < L2;i++)    //模拟对应位置相加
      |                                          ^
0_0_39349238_7544.cpp:12:42: error: expected '}' at end of input
0_0_39349238_7544.cpp:5:1: note: to match this '{'
    5 | {
      | ^