Compilare: user.cpp: In function ‘int main()’: user.cpp:11:33: warning: unused variable ‘nivel’ [-Wunused-variable] int p,n,k,i,cnt=0,j,d,l1,l2,nivel; ^ user.cpp:85:22: warning: ‘l2’ may be used uninitialized in this function [-Wmaybe-uninitialized] else if(l1==l2) ^ user.cpp:89:23: warning: ‘l1’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<l1<<" "<<l2<<" "<<i; ^