Compilare: user.cpp: In function ‘int main()’: user.cpp:20:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fol[p1][p2]==0) ^ user.cpp:20:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fol[p1][p2]==0) ^ user.cpp:22:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] fol[p1][p2]=1; ^ user.cpp:22:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] fol[p1][p2]=1; ^ user.cpp:23:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] sc[p1]++; ^ user.cpp:25:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fol[p2][p1]==0) ^ user.cpp:25:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(fol[p2][p1]==0) ^ user.cpp:27:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] fol[p2][p1]=1; ^ user.cpp:27:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] fol[p2][p1]=1; ^ user.cpp:28:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] sc[p2]++; ^ user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("nrcuv.in","r",stdin); ^ user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("nrcuv.out","w",stdout); ^ user.cpp:10:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&p1); ^ user.cpp:15:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c%c%c",&p1,&p2,&p2); ^ user.cpp:30:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&p1); ^