C#——创建Windows应用程序,统计从键盘输入一行字符串中,大写字母个数,小写字母的个数并输出。使用do while循环
首先设计如下界面:
编写如下代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace tt
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
int i = 0;
int numberBig=0;
int numberLittle=0;
do
{
char c=textBox1 .Text [i++];
if(c>='A'&c<='Z')
{
numberBig ++;
}
if(c>='a'&c<='z')
{
numberLittle++;
}
}while (i!=textBox1 .TextLength);
label2.Text = "大写字母个数为:"+numberBig+"\n小写字符个数:"+numberLittle;
}
}
}
运行结果: