Compilare: user.cpp: In function ‘int main()’: user.cpp:21:23: warning: unused variable ‘ls’ [-Wunused-variable] int i,n,j,k,cnt=0,ls,ld,mij; ^ user.cpp:21:26: warning: unused variable ‘ld’ [-Wunused-variable] int i,n,j,k,cnt=0,ls,ld,mij; ^ user.cpp:21:29: warning: unused variable ‘mij’ [-Wunused-variable] int i,n,j,k,cnt=0,ls,ld,mij; ^ user.cpp:22:10: warning: unused variable ‘gasit’ [-Wunused-variable] bool gasit=0; ^