Compilare: user.cpp: In function ‘int main()’: user.cpp:81:12: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> op + 1; ^ user.cpp:108:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] startX += dx[op[1]]; ^ user.cpp:109:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] startY += dy[op[1]]; ^ user.cpp:130:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] line += dx[op[step]]; ^ user.cpp:131:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] col += dy[op[step]]; ^ user.cpp:143:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] line += dx[op[step + 1]] - dx[op[step]]; ^ user.cpp:143:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] line += dx[op[step + 1]] - dx[op[step]]; ^ user.cpp:144:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] col += dy[op[step + 1]] - dy[op[step]]; ^ user.cpp:144:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] col += dy[op[step + 1]] - dy[op[step]]; ^ user.cpp:162:9: warning: unused variable ‘sol’ [-Wunused-variable] double sol = 1.0 * reachedCellCount / (1.0 * accesibleCellCount) * 100.0; ^ user.cpp:46:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cobai.out", "w", stdout); ^