qfedu-c-level/day4/homework/h13.c

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// 【扩展题1】请编程输出0-1000以内的水仙花数
// 【提示】水仙花数算法:一个数 = 它各位的立方和,例如 : 153 = 1 * 1 * 1 + 5 * 5 * 5 + 3 * 3 * 3
#include <stdio.h>
void fun1()
{
int i, j, k;
for (i = 0; i < 10; i++)
{
for (j = 0; j < 10; j++)
{
for (k = 0; k < 10; k++)
{
if (i * 100 + j * 10 + k == i * i * i + j * j * j + k * k * k)
printf("%d\n", i * 100 + j * 10 + k);
}
}
}
}
void fun2()
{
int x = 0;
while (x++ < 1000 - 1) // -1 是因为 1000 不是水仙花数
{
int a = x / 100;
int b = x / 10 % 10;
int c = x % 10;
if (x == a * a * a + b * b * b + c * c * c)
printf("%d\n", x);
}
}
int main()
{
fun2();
return 0;
}