c++ - 值中的串联位

Question

我需要连接位，例如:

0x10 plus 0x12 = 0x1012
or
0x123 plus 0x4 = 0x1234

如果没有字符串类，我该怎么做？

Answer 1

您必须评估最右边值的排名。

我相信，这样的事情应该可行:

// Returns rank of the value increased by one (except, when value == 0)
int rank(int value)
{
    int result = 0;
    while (value > 0)
    {
        value /= 16;
        result++;
    }

    return result;
}

int main(int argc, char * argv[])
{
    int left = 0x12;
    int right = 0x34;

    int sum = (left << (4 * rank(right))) + right;

    printf("%x\n", sum);
}