Compilare: user.cpp: In function ‘void lee(int, int)’: user.cpp:31:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( v[x_aa][y_aa] >= v[x[s]][y[s]] + (q[x_aa][y_aa] - 'a') ){ ^ user.cpp:31:50: warning: array subscript has type ‘char’ [-Wchar-subscripts] if( v[x_aa][y_aa] >= v[x[s]][y[s]] + (q[x_aa][y_aa] - 'a') ){ ^ user.cpp:35:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[x_aa][y_aa] = v[x[s]][y[s]] + q[x_aa][y_aa] - 'a'; ^ user.cpp:35:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[x_aa][y_aa] = v[x[s]][y[s]] + q[x_aa][y_aa] - 'a'; ^ user.cpp:17:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, s, d, k, x_aa, y_aa; ^ user.cpp:17:21: warning: unused variable ‘k’ [-Wunused-variable] int i, j, s, d, k, x_aa, y_aa; ^ user.cpp: In function ‘int back_lee(int, int)’: user.cpp:56:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] x_aa = xx - x_a[vv[xx][yy]]; ^ user.cpp:57:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] y_aa = yy - y_a[vv[xx][yy]]; ^ user.cpp: In function ‘int main()’: user.cpp:112:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%c",q[x[i]][y[i]]); ^ user.cpp:112:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%c",q[x[i]][y[i]]); ^ user.cpp:95:21: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:95:27: warning: unused variable ‘d’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:95:30: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, s, t, d, k; ^ user.cpp:92:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drum6.in","r",stdin); ^ user.cpp:93:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("drum6.out","w",stdout); ^ user.cpp:97:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%*c",&n,&m);