用visualstudio制作的简单的计算器

.首先利用 visual studio里面的 button和 textbox模块建立上图模块。然后就是编写程序：该程序最重要的是要理解清楚计算器的运算逻辑。publicpartialclassform1 :formstringa, b, q, ac;intc = 0, d = 0, n = 0, p = 0, m = 0; doubletemp1 = -1;intpos = 0; publicform1();.initializecomponent();privatevoidtextbox1_textchanged(objectsender, eventargse)publicvoidaddnum(intnum)textbox1.text = textbox1.text + num.tostring();if(c 0)/管1理a 加?减?乘?除y运?算?textbox1.text = ;a = num.tostring();b = b + a;textbox1.text = b;privateeventargse)voidbutton1_click(objectsender,addnum(7);/向 显?示o?屏加?字?n+;privatevoidbutton2_click(objectsender, eventargse)addnum(8);privatevoidbutton3_click(objectsender, eventargse)addnum(9);privatevoidbutton5_click(objectsender, eventargse)addnum(4);privatevoidbutton6_click(objectsender, eventargse)addnum(5);privatevoidbutton7_click(objectsender, eventargse)addnum(6);privatevoidbutton9_click(objectsender, eventargse)addnum(1);privatevoidbutton10_click(objectsender, eventargse)addnum(2);privateeventargse)voidbutton11_click(objectsender,addnum(3);privatevoidbutton14_click(objectsender,eventargse)addnum(0);privatevoidbutton15_click(objectsender, eventargse)if(p=0)textbox1.text = textbox1.text +.; /加?上|? 小?数oy点?p+; m+;if(c 0)/管1理a加?减?乘?除y运?算?b = b +.;privatevoidbutton4_click(objectsender, eventargse)pos = 1;temp1 =convert.todouble (textbox1.text); textbox1.text =temp1+ ;d+; c+; p = 0;privatevoidbutton8_click(objectsender, eventargse)pos = 2;temp1 =convert .todouble(textbox1.text); textbox1.text = temp1 +-;c+; p = 0;privatevoidbutton12_click(objectsender, eventargse)pos = 3;temp1 =convert .todouble(textbox1.text); textbox1.text = temp1 +*;c+; p = 0;privatevoidbutton16_click(objectsender, eventargse)pos = 4;temp1 =convert .todouble(textbox1.text); textbox1.text = temp1 +/;c+; p = 0;privatevoidbutton13_click(objectsender, eventargse)doubletemp2 =convert .todouble(b);switch(pos)case 1: textbox1.text =(temp1 +temp2).tostring();break ; case 2:textbox1.text =(temp1 - temp2).tostring();break ; case 3:textbox1.text =(temp1 * temp2).tostring();break ;case 4: textbox1.text =(temp1 /temp2).tostring();break ;privatevoidbutton17_