C++ cout利用控制符dec、hex和oct，分别输出十进制、十六进制和八进制显示整数

void hexoct2(void)
{
int chest=42;
int waist=42;
int inseam=42;

cout<<"monsieur cuts a striking figure!"<<endl;
cout<<"chest="<<chest<<" (decimal for 42)"<<endl;
cout<<hex;//manipulator for changing number base
cout<<"waist="<<waist<<" (hexadecimal for 42)"<<endl;
cout<<oct;//manipulator for changing number base
cout<<"inseam="<<inseam<<" (octal for 42)"<<endl;

cin.get();
}