Compilare: user.cpp: In function ‘int main()’: user.cpp:10:15: warning: unused variable ‘j’ [-Wunused-variable] int n,i,m,j,s=0,c,c2,nr=0; ^ user.cpp:34:18: warning: ‘c2’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<c<<" "<<c2<<" "<<nr<<" "<<s; ^ user.cpp:34:10: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<c<<" "<<c2<<" "<<nr<<" "<<s; ^