using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp2
{
class Program
{
static int Add(params int() values)
{
int result = 0;
for (int i = 0; i < values.Length; i++)
{
result = result + values(i);
}
return result;
}
private static void PrintAll(params object() values)
{
foreach (object item in values)
{
Console.Write(item);
}
}
(DllImport("user32.dll"))
static extern int MessageBeep(uint uType);
static int TestMethod(uint type) => 0;
static void Main(string() args)
{
Console.WriteLine(Add(1,2,3,4,5));
Console.WriteLine(Add(1, 2, 3, 4, 5,6,7,8,9,10));
PrintAll(1.05, "Result", 3);
MessageBeep(1);
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp2
{
class Program
{
static int Add(params int() values)
{
int result = 0;
for (int i = 0; i < values.Length; i++)
{
result = result + values(i);
}
return result;
}
private static void PrintAll(params object() values)
{
foreach (object item in values)
{
Console.Write(item);
}
}
static void Main(string() args)
{
Console.WriteLine(Add(1,2,3,4,5));
Console.WriteLine(Add(1, 2, 3, 4, 5,6,7,8,9,10));
PrintAll(1.05, "Result", 3);
}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp3
{
class Program
{
static void Main(string() args)
{
int iNum = 100;
//주소의 사용을 막았다
//c# 객체지향 언어에서 참조개념이 있기 때문에
//주소의 사용을 막아 놓았다
unsafe
{
Console.WriteLine("{0:x}", (int)&iNum);
}
}
}
}
21. 창 텍스트 가져오기
선언: C#(DllImport(“user32”)) public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount); VB.NET _ Public Shared Function GetWindowText(hWnd As IntPtr, lpString As StringBuilder, nMaxCount As Integer) As Integer End Functio
slaner.tistory.com
