Initial data commit

Task/Memory-allocation/C-sharp/memory-allocation.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Runtime.InteropServices;
+
+public unsafe class Program
+{
+    public static unsafe void HeapMemory()
+    {
+        const int HEAP_ZERO_MEMORY = 0x00000008;
+        const int size = 1000;
+        int ph = GetProcessHeap();
+        void* pointer = HeapAlloc(ph, HEAP_ZERO_MEMORY, size);
+        if (pointer == null)
+            throw new OutOfMemoryException();
+        Console.WriteLine(HeapSize(ph, 0, pointer));
+        HeapFree(ph, 0, pointer);
+    }
+
+    public static unsafe void StackMemory()
+    {
+        byte* buffer = stackalloc byte[1000];
+        // buffer is automatically discarded when the method returns
+    }
+    public static void Main(string[] args)
+    {
+        HeapMemory();
+        StackMemory();
+    }
+    [DllImport("kernel32")]
+    static extern void* HeapAlloc(int hHeap, int flags, int size);
+    [DllImport("kernel32")]
+    static extern bool HeapFree(int hHeap, int flags, void* block);
+    [DllImport("kernel32")]
+    static extern int GetProcessHeap();
+    [DllImport("kernel32")]
+    static extern int HeapSize(int hHeap, int flags, void* block);
+
+}