Compilare: user.cpp: In function ‘int main()’: user.cpp:14:37: warning: variable ‘S’ set but not used [-Wunused-but-set-variable] int k,val,n,l,i,semn=1,a=-50000,S,st=0,dr=-1,x,y; ^ user.cpp:68:26: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<x + 1<<" "<<y + 1<<" "<<a; ^ user.cpp:68:14: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<x + 1<<" "<<y + 1<<" "<<a; ^