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查询年龄区间人数
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 WindowsFormsApp3
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Button1_Click(object sender, EventArgs e)
{
int ageFrom = int.Parse(textBoxAgeFrom.Text);
int ageTo = int.Parse(textBoxAgeTo.Text);
string ageData = txtAgeData.Text;
char split = ',';
string [] ageArr = ageData.Split(split);
int count = 0;
for(int i = 0; i < ageArr.Length; i )
{
if (int.Parse(ageArr[i]) >= ageFrom && int.Parse(ageArr[i]) <= ageTo)
{
count ;
}
}
label2.Text = count "人";
}
}
}