C语言 找出四叶玫瑰数

#include <stdio.h>
 
bool isRoseNumber(int num);

int main()
{
    for(int i = 1000; i < 10000; i++)
    {
        if(isRoseNumber(i)){
            printf("%d is rose number.\n", i);
        }
    }
    return 0;
}

bool isRoseNumber(int num)
{
    int a, b, c, d;
    a = num / 1000;
    b = (num / 100) % 10;
    c = (num / 10) % 10;
    d = num % 10;
    return ((a * a * a * a + b * b * b * b + c * c * c * c + d * d * d * d) == num);
}

结果如下：

1634 is rose number.
8208 is rose number.
9474 is rose number.
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