1.C#中int和byte[]轉換:數組
/// <summary> /// 把int32類型的數據轉存到4個字節的byte數組中 /// </summary> /// <param name="m">int32類型的數據 /// <param name="arry">4個字節大小的byte數組 public static bool ConvertIntToByteArray(Int32 m, ref byte[] arry) { if (arry == null) return false; if (arry.Length < 4) return false; arry[0] = (byte)(m & 0xFF); arry[1] = (byte)((m & 0xFF00) >> 8); arry[2] = (byte)((m & 0xFF0000) >> 16); arry[3] = (byte)((m >> 24) & 0xFF); return true; } /// <summary> /// 把byte數組中的前4個字節轉換爲int32類型的數據 /// </summary> public static int ConvertByteArrayToInt(byte[] arry) { return BitConverter.ToInt32(arry, 0); }
2.C++中byte[]與int類型轉換spa
//int --> BYTE[]: int data = 0xFFFFFFFF; unsigned char buf[4]; memcpy(buf, &data, sizeof(int)); //BYTE[] --> int : memcpy(&data, buf, 4);