Compilare: user.cpp: In function ‘void rec(int, int, int, int, int)’: user.cpp:10:17: warning: variable ‘val’ set but not used [-Wunused-but-set-variable] int v[4][3],val[5]; ^ user.cpp:20:28: warning: array subscript is above array bounds [-Warray-bounds] v[++v[0][0]][1]=x+d/2-1+i; ^ user.cpp:21:26: warning: array subscript is above array bounds [-Warray-bounds] v[v[0][0]][2]=y+d/2-1+j; ^ user.cpp:15:21: warning: ‘v[4][2]’ may be used uninitialized in this function [-Wmaybe-uninitialized] int aux=a[px][py]; ^ user.cpp:15:21: warning: ‘v[4][1]’ may be used uninitialized in this function [-Wmaybe-uninitialized]