void Print(SqStack &s1)
{
    cout<<"请输入从货架出售货物件数\t"<<endl;
    int s;
    cin>>s;
    while(1)
    {
        if(s<=s1.stacksize)
        {
            for(int i=0;i<s;i++)
            {
                Inform e;
                s1.top--;
                e=*s1.top;
                cout<<e.name<<" "<<e.a<<endl;
            }
            break;
        }
        else
            cout<<"货架货物不足"<<endl;
    }
}