Compilare: user.cpp: In function ‘int main()’: user.cpp:87:25: warning: variable ‘xf’ set but not used [-Wunused-but-set-variable] int i,j,xs,ys,xd,yd,xf,yf; ^ user.cpp:87:28: warning: variable ‘yf’ set but not used [-Wunused-but-set-variable] int i,j,xs,ys,xd,yd,xf,yf; ^ user.cpp: In function ‘int Lee(int, int)’: user.cpp:84:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:115:18: warning: ‘yd’ may be used uninitialized in this function [-Wmaybe-uninitialized] a[xd][yd]='0'; ^ user.cpp:115:18: warning: ‘xd’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:117:17: warning: ‘ys’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<Lee(xs,ys)<<'\n'; ^ user.cpp:117:17: warning: ‘xs’ may be used uninitialized in this function [-Wmaybe-uninitialized]