Compilare: user.cpp: In function ‘int main()’: user.cpp:43:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(R[ruc.x][ruc.y]==0) ^ user.cpp:43:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(R[ruc.x][ruc.y]==0) ^ user.cpp:45:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] R[ruc.x][ruc.y]=R[pas.x][pas.y]+1; ^ user.cpp:45:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] R[ruc.x][ruc.y]=R[pas.x][pas.y]+1; ^ user.cpp:45:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] R[ruc.x][ruc.y]=R[pas.x][pas.y]+1; ^ user.cpp:45:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] R[ruc.x][ruc.y]=R[pas.x][pas.y]+1; ^ user.cpp:64:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(J[ruc.x][ruc.y]==0) ^ user.cpp:64:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(J[ruc.x][ruc.y]==0) ^ user.cpp:66:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] J[ruc.x][ruc.y]=J[pas.x][pas.y]+1; ^ user.cpp:66:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] J[ruc.x][ruc.y]=J[pas.x][pas.y]+1; ^ user.cpp:66:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] J[ruc.x][ruc.y]=J[pas.x][pas.y]+1; ^ user.cpp:66:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] J[ruc.x][ruc.y]=J[pas.x][pas.y]+1; ^ user.cpp:15:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rj.in","r",stdin); ^ user.cpp:16:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rj.out","w",stdout); ^ user.cpp:18:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&n,&m); ^ user.cpp:21:27: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(v,101,stdin); ^ user.cpp:53:22: warning: ‘J2’ may be used uninitialized in this function [-Wmaybe-uninitialized]