unsigned char 数组如何转换为long long数组

Question

将char 数组转换为long long数组 转换后如图所示

Answer 1

unsigned char a[] = {

    0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12,


	0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 


	0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 


	0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, 0x12, };

    long long llong[4] = {0};

    for (int i = 0; i < 4; i++)
    {
        for (int j = 0; j < 8; j++)
        {
            llong[i] |= (long long)a[j]<<(8*j);
        }
    }

楼上也可以，这是常规做法