Compilare: main.cpp: In function 'int main()': main.cpp:34:43: warning: 'pj' may be used uninitialized in this function [-Wmaybe-uninitialized] if(x+d[i].q>0&&x+d[i].q<n+1&&y+d[i].w>0&&y+d[i].w<m+1&&a[x+d[i].q][y+d[i].w]==0&&c==0) ~^~~~~~~ main.cpp:34:17: warning: 'pi' may be used uninitialized in this function [-Wmaybe-uninitialized] if(x+d[i].q>0&&x+d[i].q<n+1&&y+d[i].w>0&&y+d[i].w<m+1&&a[x+d[i].q][y+d[i].w]==0&&c==0) ~^~~~~~~