水仙花数（N<=7&&N>=3）

来源：互联网发布：电力行业大数据现状编辑：程序博客网时间：2024/06/05 10:05

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>

void main()
{
unsigned int N;
unsigned int i1 = 0, i2 = 0, i3 = 0, i4 = 0, i5 = 0, i6 = 0,i7 = 0;
scanf("%d", &N);

switch (N)
{
case 3:
for (unsigned int K = 100; K < 1000; K++)
{
i1 = K / 100;
i2 = K / 10 % 10;
i3 = K % 10;
if (K == i1 * i1*i1 + i2*i2*i2 + i3*i3*i3)
{
printf("%d\n", K);
}
}
break;
case 4:
for (unsigned int K = 1000; K < 10000; K++)
{
i1 = K / 1000;
i2 = K / 100 % 10;
i3 = K / 10 % 10;
i4 = K % 10;
if (K == i1 * i1*i1 *i1 + i2*i2*i2*i2 + i3*i3*i3 *i3 + i4*i4*i4*i4)
{
printf("%d\n", K);
}
}
break;
case 5:

for (unsigned int K = 10000; K < 100000; K++)
{
i1 = K / 10000;
i2 = K / 1000 % 10;
i3 = K / 100 % 10;
i4 = K / 10 % 10;
i5 = K % 10;
if (K == i1 * i1*i1 *i1 *i1 + i2*i2*i2*i2*i2 + i3*i3*i3*i3*i3 + i4*i4*i4*i4*i4 + i5*i5*i5*i5*i5)
{
printf("%d\n", K);
}
}
break;
case 6:

for (unsigned int K = 100000; K < 1000000; K++)
{
i1 = K / 100000;
i2 = K / 10000 % 10;
i3 = K / 1000 % 10;
i4 = K / 100 % 10;
i5 = K / 10 % 10;
i6 = K % 10;
if (K == i1 * i1*i1*i1 * i1*i1 + i2*i2*i2*i2*i2*i2 + i3*i3*i3*i3*i3*i3 + i4*i4*i4*i4*i4*i4 + i5*i5*i5*i5*i5*i5 + i6*i6*i6*i6*i6*i6)
{
printf("%d\n", K);
}
}
break;
case 7:

for (unsigned int K = 1000000; K < 10000000; K++)
{
i1 = K / 1000000;
i2 = K / 100000 % 10;
i3 = K / 10000 % 10;
i4 = K / 1000 % 10;
i5 = K / 100 % 10;
i6 = K / 10 % 10;
i7 = K % 10;
if (K == i1 * i1*i1*i1*i1 * i1*i1 + i2*i2*i2*i2*i2*i2*i2 + i3*i3*i3*i3*i3*i3*i3 + i4*i4*i4*i4*i4*i4*i4 + i5*i5*i5*i5*i5*i5*i5 + i6*i6*i6*i6*i6*i6*i6 + i7*i7*i7*i7*i7*i7*i7)
{
printf("%d\n", K);
}
}
break;
default:
break;
}
system("pause");

}

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