private void button16_Click(object sender,EventArgs e){switch(s){case"+":b = Convert.ToDouble(textBox1); c = a + b; textBox1.Text = c.ToString();break;case"-":b = Convert.ToDouble(textBox1);c=a-b;textBox1.Text = c.ToString();break;case"*":b = Convert

public private和private区别?java中 private void walk（）｛｝和 public private void talk(){}区别? 未处理的“System.ArgumentException”类型的异常出现在 system.windows.forms.dll 中.static void Main() {}private void Form1_Load(object sender,System.EventArgs e){}private void menuItem2_Click(object sender,System.EventArgs e){}private vo private void 和 private string 有什么区别刚学C#,看到有的函数是 private void XXX()有的函数是 private string XXX ()他们有什么区别呢,能用例子说明不同吗. private Private private void love(){if（you love me）｛we.marry();}else{me.leave()}}什么意思? 谁能帮忙看下这是啥意思~#include #include #include class MY{ private:char time[10]; char place[10]; public:char *heart; void feeling(char *feel); void course(char time[10],char place[10]); }; class MM{ private:int *heart; void feeling(); pu 指出下面程序重点错误,在错误处说明出错原因#includeclass A{private:int a;public:void setA(int x){a=x;}void ShowA() const {cout private void button11_Click(object sender,EventArgs e){Button btn = (Button)sender;textBox1.Text = textBox1.Text + + btn.Text + ;}private void button12_Click(object sender,EventArgs e){Button btn = (Button)sender;textBox1.Text = textBox1.Text C#得到一个5位随机数(位数可以重复)?private void SetID() { id=Random? }随机得到5位数id selection does not contain a main type的问题import java.util.Scanner;public class Population {private String name;private int population;private double growthRate;public void readInput(){Scanner keyboard = new Scanner(System.in);System.out.println 【答案】求e的x次幂（VB)Private Sub Button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles Button1.ClickDim i,s,d,o As SingleDim ee,temp As Singled = Val(Me.TextBox1.Text)i = 1s = 1ee = 1.0o = dtemp = dDo While temp 随机产生50~100间的整数组成一个4行4列的矩阵,并求矩阵对角线元素的和.Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim a() As Integer, i, j, sum As Integer R #include class base { Private:int x,y; public:void setxy(int a,int b){x=a;y=b;} void 分析下面程序的输出结果.#includeclass base{Private:int x,y;public:void setxy(int a,int b){x=a;y=b;}void show(base *p){cout 在c++中类的派生的含义是什么?#include class CBOX{public:void f(){};void print(){};private:int length;int width;int height;};class ColorBox:public CBOX{public:void show(){};private:int color;};void main(){CBOX a;ColorBox b;b.show();}请问a 是一道c++的题目 是类 部分类的定义,需要完善#include using namespace std;class Array_max{public:void set_value( ); //对数组元素设置值void find_max( ); //找出数组中的最大元素void show_max( ); //输出最大值private: string sql = select * from user where user_name=' +t1.Text.Trim()+ ' and user_password='+t2.Texstring sql = select * from user where user_name=' +t1.Text.Trim()+ ' and user_password='+t2.Text.Trim()+ ';错在哪里啊?protected void Button1 这道题我搞不懂,20.public class SychTest{ private int x; private int y; public void setX(int i){ x=i;} public void setY(int i){y=i;} public Synchronized void setXY(int i){ setX(i); setY(i); } public Synchronized boolean check(){ return =y; } }