Compilare: user.cpp: In function ‘void afis(int, int)’: user.cpp:83:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dir[x][y]) afis(x + dl[dir[x][y]], y + dc[dir[x][y]]); ^ user.cpp:83:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dir[x][y]) afis(x + dl[dir[x][y]], y + dc[dir[x][y]]); ^ user.cpp: In function ‘int main()’: user.cpp:22:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alpin.in", "r", stdin); ^ user.cpp:23:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alpin.out", "w", stdout); ^ user.cpp:28:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:32:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(buff); ^ user.cpp:71:15: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] afis(x, y); ^ user.cpp:71:15: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] /tmp/ccugc0Vy.o: In function `main': user.cpp:(.text.startup+0x80): warning: the `gets' function is dangerous and should not be used.