View Compilation Error

0_0_39575050_11833.cpp: In function 'int main()':
0_0_39575050_11833.cpp:4:7: error: 'll' was not declared in this scope
    4 |     p(ll num)
      |       ^~
0_0_39575050_11833.cpp:4:5: error: 'p' was not declared in this scope
    4 |     p(ll num)
      |     ^
0_0_39575050_11833.cpp:8:9: error: 'string' was not declared in this scope
    8 |         string s;
      |         ^~~~~~
0_0_39575050_11833.cpp:9:17: error: 's' was not declared in this scope
    9 |         reverse(s.begin(), s.end());
      |                 ^
0_0_39575050_11833.cpp:9:9: error: 'reverse' was not declared in this scope
    9 |         reverse(s.begin(), s.end());
      |         ^~~~~~~
0_0_39575050_11833.cpp:11:7: error: 'sum' was not declared in this scope
   11 |     p(sum);
      |       ^~~