Compilare: user.cpp: In function ‘int main()’: user.cpp:66:61: warning: array subscript has type ‘char’ [-Wchar-subscripts] freq[map[i + ldir[k]][j + cdir[k]].color]++; ^ user.cpp:70:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(freq[k] >= 2 && k != map[i][j].color) ^ user.cpp:71:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] tries[n_tries ++] = k; ^ user.cpp:28:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d ", &p, &n, &m); ^ user.cpp:32:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%c ", &map[i][j].color); ^