Compilare: main.cpp: In function 'int main()': main.cpp:44:24: warning: array subscript has type 'char' [-Wchar-subscripts] coord.x += dx[d]; ^ main.cpp:45:24: warning: array subscript has type 'char' [-Wchar-subscripts] coord.y += dy[d]; ^ main.cpp:67:20: warning: array subscript has type 'char' [-Wchar-subscripts] val += dy[d] * coord.x; ^ main.cpp:71:36: warning: format '%d' expects argument of type 'int', but argument 2 has type '__gnu_cxx::__enable_if<true, double>::__type {aka double}' [-Wformat=] printf("%d" ,abs(val) - P/2 + 1); ^ main.cpp:12:32: 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); ^ main.cpp:13:34: 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); ^ main.cpp:19:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &P); ^ main.cpp:43:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%c", &d); ^