Compilare: user.cpp: In function ‘int main()’: user.cpp:35:29: warning: statement has no effect [-Wunused-value] for(j=1;j<=n;j++)poz; ^ user.cpp:48:43: warning: statement has no effect [-Wunused-value] for(int q=i;q<=x&&ok;q++)M; ^ user.cpp:25:19: warning: unused variable ‘w’ [-Wunused-variable] int i,j,x,y,q,w; ^ user.cpp:25:17: warning: ‘q’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,x,y,q,w; ^ user.cpp:36:22: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(A[i][j]) ^