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Codex edited this page Oct 11, 2026
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2 revisions
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& 取得位址,* 為指標命名,-> 存取指標目標的成員。需要不安全和記憶體壽命合規性。
請將此範例另存為 Example.cs,並與本頁其他範例分開執行。
Example.cs:
// PROJECT-EXAMPLE
unsafe
{
int value = 3;
int* pointer = &value;
*pointer = 7;
System.Console.WriteLine(value);
}請在專案中啟用 <AllowUnsafeBlocks>true</AllowUnsafeBlocks>。指標僅在所示範圍內有效。
結果:
7
Type* pointer = &value; / *pointer / pointer->Memberusing System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
unsafe { int value = 3; int* pointer = &value; *pointer = 9; Console.WriteLine(value); }
}
}using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
unsafe { Point value = new() { X = 2 }; Point* pointer = &value; pointer->X += 5; Console.WriteLine(value.X); }
}
}
public struct Point { public int X; }官方來源:Microsoft學習。
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