View Compilation Error

0_0_39660292_24372.cpp:3:6: error: variable or field 'sum' declared void
    3 | void sum(n);
      |      ^~~
0_0_39660292_24372.cpp:3:10: error: 'n' was not declared in this scope
    3 | void sum(n);
      |          ^
0_0_39660292_24372.cpp: In function 'int main()':
0_0_39660292_24372.cpp:8:5: error: 'sum' was not declared in this scope
    8 |     sum(n);
      |     ^~~
0_0_39660292_24372.cpp: At global scope:
0_0_39660292_24372.cpp:12:6: error: variable or field 'sum' declared void
   12 | void sum(n) {
      |      ^~~
0_0_39660292_24372.cpp:12:10: error: 'n' was not declared in this scope
   12 | void sum(n) {
      |          ^