using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Windows.Forms;

namespace?計算器
{
????public?partial?class?計算器?:?Form
????{
????????public?計算器（）
????????{
????????????InitializeComponent（）;
????????}
????????public?int?tag?=?0suanwan?=?0;//上次輸入的字符或數字的標志
????????Queue?lishi?=?new?Queue（）;
????????Queue?que?=?new?Queue（）;
????????Stack?st?=?new?Stack（）;
????????Stack?ch=?new?Stack（）;
????????Queue?tmp?=?new?Queue（）;
????????public?void?jisuan（string?s）
????????{
????????????int?k?=?0?ctos?=?0?stoc?=?0;
????????????for?（int?i?=?0;?i?