Compilare: user.cpp: In function ‘int main()’: user.cpp:9:11: warning: unused variable ‘i’ [-Wunused-variable] { int n,k,i,j,m,a,elg,elu; ^ user.cpp:9:13: warning: unused variable ‘j’ [-Wunused-variable] { int n,k,i,j,m,a,elg,elu; ^ user.cpp:9:19: warning: variable ‘elg’ set but not used [-Wunused-but-set-variable] { int n,k,i,j,m,a,elg,elu; ^ user.cpp:59:16: warning: ‘ind’ may be used uninitialized in this function [-Wmaybe-uninitialized] else out<<ind; ^