Compilare: user.cpp: In function ‘int main()’: user.cpp:41:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i] = make_pair(v[num - 1].first + dirl[ch], v[num - 1].second +dirc[ch]); ^ user.cpp:41:81: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[i] = make_pair(v[num - 1].first + dirl[ch], v[num - 1].second +dirc[ch]); ^ user.cpp:32:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &p); ^ user.cpp:37:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &nr); ^ user.cpp:40:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %c", &num, &ch); ^ user.cpp:65:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ user.cpp:74:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &mat[i][j]); ^