實現計算機

實現乙個計算器

實現兩個運算元（小數和整數均可）的加、減、乘、除、清零操作。

1.加法運算

2.減法運算

3.乘法運算

4.除法運算

64/16=4

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 calculator
double left, right, result;
string flag;
private void button1_click(object sender, eventargs e)
private void button2_click(object sender, eventargs e)
private void button3_click(object sender, eventargs e)
private void button4_click(object sender, eventargs e)
private void button5_click(object sender, eventargs e)
private void button6_click(object sender, eventargs e)
private void button7_click(object sender, eventargs e)
private void button8_click(object sender, eventargs e)
private void button9_click(object sender, eventargs e)
private void button10_click(object sender, eventargs e)
private void button11_click(object sender, eventargs e)
private void button15_click(object sender, eventargs e)
else if(flag == "-")
else if (flag == "×")
else if(flag=="÷")
else}}
private void button18_click(object sender, eventargs e)
private void button14_click(object sender, eventargs e)
private void button16_click(object sender, eventargs e)
private void button17_click(object sender, eventargs e)
private void button12_click(object sender, eventargs e)
private void button13_click(object sender, eventargs e)}}

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