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#include <stdio.h>
void Add(int *n,int *ret)
{
if (*n<1)
{
return;
}
else
{
*ret+=*n;
*n=*n-1;
Add(n,ret);
}
}
void main()
{
int n;
int ret=0;
printf("请输入一个整数:\n");
scanf("%d",&n);
Add(&n,&ret);
printf("运算结果:%d\n",ret);
}
#include <stdio.h>
int Add(int n)
{
if (n<=1)
{
return n;
}
else
{
n=n*Add(n-1);
}
return n;
}
void main()
{
int n;
printf("请输入一个整数:\n");
scanf("%d",&n);
n = Add(n);
printf("运算结果:%d\n",n);
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</div>
</form>
</body>
</html>
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
var x = Convert.ToInt16(TextBox1.Text);
var y = 0;
for (var i = 1; i <= x; i++)
{
y = y + i;
}
Response.Write(y);
}
}