Compilare: user.cpp: In function ‘int main()’: user.cpp:28:14: warning: variable ‘nr’ set but not used [-Wunused-but-set-variable] int n,m,i,q,nr,sol,k,start,last,c; ^ user.cpp:28:29: warning: unused variable ‘last’ [-Wunused-variable] int n,m,i,q,nr,sol,k,start,last,c; ^ user.cpp:89:6: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<c; ^