功能描述：只实现加减法

C#不放设计图就是耍流氓啦

【myform.cs】 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 实验一 {   public partial class Myform : Form { //不加的话会报错 public static void Main(string[] args) { // Starts the application. Application.Run(new Myform());//FormXXX是你定义的窗口类 } public static List<char> inputStr = new List<char>(1000); //用户的输入 public Myform() { InitializeComponent(); } private void button12_Click(object sender, EventArgs e) { //等号代码 textBox1.AppendText("="); //textBox1.Text = textBox1.Text; textBox1.Text = DataOp.DataMain(); string temp = DataOp.DataMain(); inputStr.Clear(); for (int i = 0; i < temp.Length; i++) { inputStr.Add(temp[i]); } } private void button13_Click(object sender, EventArgs e) { textBox1.Text = ""; inputStr.Clear(); //清空链表的所有元素 } private void button1_Click_1(object sender, EventArgs e) { inputStr.Add('1'); textBox1.AppendText("1"); } private void button2_Click(object sender, EventArgs e) { inputStr.Add('2'); textBox1.AppendText("2"); } private void button10_Click(object sender, EventArgs e) { inputStr.Add('+'); textBox1.AppendText("+"); } private void button11_Click(object sender, EventArgs e) { inputStr.Add('-'); textBox1.AppendText("-"); } private void button3_Click(object sender, EventArgs e) { inputStr.Add('3'); textBox1.AppendText("3"); } private void button4_Click(object sender, EventArgs e) { inputStr.Add('4'); textBox1.AppendText("4"); } private void button5_Click(object sender, EventArgs e) { inputStr.Add('5'); textBox1.AppendText("5"); } private void button6_Click(object sender, EventArgs e) { inputStr.Add('6'); textBox1.AppendText("6"); } private void button7_Click(object sender, EventArgs e) { inputStr.Add('7'); textBox1.AppendText("7"); } private void button8_Click(object sender, EventArgs e) { inputStr.Add('8'); textBox1.AppendText("8"); } private void button9_Click(object sender, EventArgs e) { inputStr.Add('9'); textBox1.AppendText("9"); } private void button13_Click_1(object sender, EventArgs e) { inputStr.Add('0'); textBox1.AppendText("0"); } } } 【program.cs】 using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; using System.Windows.Forms; namespace 实验一 { class DataOp : Myform { static Stack<int> m = new Stack<int>();//数字栈,数字类型为int static Stack<char> s = new Stack<char>();//符号栈 public static void Read() //Read()从inputStr输入流中读值 { for (int i = 0; i < inputStr.Count; i++) { if (!IsOperator(inputStr[i])) //数字 { string s = null; while (i < inputStr.Count && !IsOperator(inputStr[i])) { s += inputStr[i]; i++; } i--; int mm = Convert.ToInt16(s); m.Push(mm); } else if (IsOper(inputStr[i])) //+ - * / { if (s.Count.Equals(0)) { s.Push(inputStr[i]); } else { int n1, n2; char s1; n2 = m.Pop(); n1 = m.Pop(); s1 = s.Pop(); int sum = Operat(n1, n2, s1); m.Push(sum); s.Push(inputStr[i]); } } } } public static int PopStack() { int sum = 0; while (s.Count != 0) { int n1, n2; char s1; n2 = m.Pop(); n1 = m.Pop(); s1= s.Pop(); sum = Operat(n1, n2, s1); m.Push(sum); } return sum; } public static bool IsOperator(char c) //是否是操作符 { if (c.Equals('+') || c.Equals('-')) return true; return false; } public static bool IsOper(char c) //是否是运算符符 { if (c.Equals('+') || c.Equals('-')) return true; return false; } public static int Operat(int n1, int n2, char s1) { int sum = 0; switch (s1) { case '+': sum = n1 + n2; break; case '-': sum = n1 - n2; break; } return sum; } public static string DataMain() { Read(); return PopStack().ToString(); } } }

PS：应付实验课，之前没学过照着其他大佬的写的 ……入门的可以参考