Compilare: user.cpp: In function ‘int main()’: user.cpp:42:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] coord.x += dirx[dir]; ^ user.cpp:43:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] coord.y += diry[dir]; ^ user.cpp:65:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] val += (coord.y - (coord.y - diry[dir])) * coord.x; ^ user.cpp:10:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ape.in","r",stdin); ^ user.cpp:11:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ape.out","w",stdout); ^ user.cpp:17:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &P); ^ user.cpp:41:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &dir); ^