请用c语言写一段代码，要求任意输入3个整数，能够输出最大值max和最小值min的差的绝对值的指数。

#include <stdio.h>
#include <math.h>

int main()
{
    int a, b, c;
    printf("请输入3个整数：\n");
    scanf("%d%d%d", &a, &b, &c);

    int max = a, min = a;
    if (b > max) max = b;
    if (c > max) max = c;
    if (b < min) min = b;
    if (c < min) min = c;

    int diff = abs(max - min);
    int power = log2(diff);
    printf("最大值和最小值的差的绝对值的指数为：%d\n", power);

    return 0;
}