数学趣题——寻找水仙花数

一个3位数若等于各位的立方和，即是水仙花数

 

源码如下：

   1: #include <stdio.h>

   2:  

   3: int IsNar(int a);

   4: void Nar();

   5:  

   6: int main()

   7: {

   8:     Nar();

   9:     return 0;

  10: }

  11:  

  12: void Nar()

  13: {

  14:     int i;

  15:     for (i=100; i<999; i++)

  16:     {

  17:         if (IsNar(i))

  18:         {

  19:             printf("%d ", i);

  20:         }

  21:     }

  22: }

  23:  

  24: int IsNar(int a)

  25: {

  26:     int sum = 0, tmp;

  27:     tmp = a;

  28:     while (tmp > 0)

  29:     {

  30:         sum += (tmp % 10) * (tmp %10) * (tmp %10);

  31:         tmp /= 10;

  32:     }

  33:  

  34:     if (sum == a)

  35:         return 1;

  36:     else

  37:         return 0;

  38: }