qfedu-c-level/day6/homework/h7.c

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// 编写程序并设计函数, 接收一个整数值,验证这个数值是否为水仙花数。 【提示】水仙花数每一位数字的3次幂累加的结果和这个数本身相同
#include <stdio.h>
#include <math.h>
int isNumberOfDaffodils(int);
int main()
{
int n;
printf("请输入一个三位整数: ");
scanf("%d", &n);
if (isNumberOfDaffodils(n))
printf("%d 是水仙花数", n);
else
printf("%d 不是水仙花数", n);
return 0;
}
int isNumberOfDaffodils(int num)
{
int i, j, k;
i = num / 100;
j = (num % 100) / 10;
k = num % 10;
if ((pow(i, 3) + pow(j, 3) + pow(k, 3)) == num)
return 1; // 是水仙花数返回非 0
return 0;
}