View Compilation Error

0_0_39575042_24372.cpp: In lambda function:
0_0_39575042_24372.cpp:7:12: error: expected '(' before 'return'
    7 |         if return;
      |            ^~~~~~
      |            (
0_0_39575042_24372.cpp:8:9: error: 'string' was not declared in this scope
    8 |         string s;
      |         ^~~~~~
0_0_39575042_24372.cpp:9:17: error: 's' was not declared in this scope
    9 |         reverse(s.begin(), s.end());
      |                 ^
0_0_39575042_24372.cpp:9:9: error: 'reverse' was not declared in this scope
    9 |         reverse(s.begin(), s.end());
      |         ^~~~~~~
0_0_39575042_24372.cpp: In function 'int main()':
0_0_39575042_24372.cpp:12:14: error: 'sum' was not declared in this scope
   12 |     print128(sum);
      |              ^~~