Compilare: user.cpp: In function ‘int main()’: user.cpp:44:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[0][ A[i] ] = i; ^ user.cpp:50:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[1][ B[i] ] = i; ^ user.cpp:71:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( !last[0][ A[i] ] ) last[0][ A[i] ] = i; ^ user.cpp:71:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( !last[0][ A[i] ] ) last[0][ A[i] ] = i; ^ user.cpp:74:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( !last[1][ B[i] ] ) last[1][ B[i] ] = i; ^ user.cpp:74:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( !last[1][ B[i] ] ) last[1][ B[i] ] = i; ^ user.cpp:23:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir.in","r",stdin); ^ user.cpp:24:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir.out","w",stdout); ^ user.cpp:28:26: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(A, NMax, stdin); ^ user.cpp:29:26: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(B, NMax, stdin); ^