2010

水仙花数

三位数的个十百位的立方和等于三位数自己的数

 1 #include <stdio.h>
 2 
 3 int main()
 4 {
 5     int m, n,i,j,a,b,c;
 6     while (scanf_s("%d %d",&m,&n))
 7     {
 8         for (j = 0,i = m;i <=n;i++)
 9         {
10             a = i / 100;
11             b = i / 10 % 10;
12             c = i % 10;
13             
14             if (a*a*a + b*b*b + c*c*c == i)
15             {
16                 printf("%d ",i);
17                 j++;
18             }
19         }
20         if (j == 0)
21             printf("no answer");
22         printf("
");
23     }
24 }

参考答案

1-1000只有5个水仙花数：1 153 370 371 407

 1 #include<stdio.h>
 2 
 3 int main()
 4 {
 5     int b, l, c, i;
 6     int a[] = {1, 153, 370, 371, 407};
 7 
 8     while (scanf("%d%d", &b, &l) != EOF)
 9     {
10         c = 0;
11         for (i = 0 ; i < 5 ; i++)
12         {
13             if (a[i] >= b && a[i] <= l)
14                 printf(c++ ? " %d" : "%d", a[i]);
15         }
16         printf(c ? "
" : "no
");
17     }
18 
19     return 0;
20 }

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