void Solve() { // brute force through all possible combinations for (int m = 1; m <= 6; m++) { for (int l = 1; l <= 10; l++) { for (int w = 1; w <= 6; w++) { int response = Theory(m, l, w); if (response == 0) { return; } } } } }

cluedo.cpp: In function 'void Solve()':
cluedo.cpp:6:28: error: 'Theory' was not declared in this scope
    6 |             int response = Theory(m, l, w);
      |                            ^~~~~~