//C语言判断Armstrong数(阿姆斯壮数),Armstrong 数，就是n位数的各位数的n次方之和等于该数，如：153=1³⁺⁵3+3^3,1634=14+6⁴⁺³4+4^4

include <stdio.h>

include <math.h>

int main()
{
int r, number, i, n = 0, j = 0;
printf("输入一个正整数:");
scanf("%d", &number);
r = number;
while (r != 0)
{
r /= 10;
j++;
}
r = number;
while (r != 0)
{
i = r % 10;
n += pow(i, j);
r /= 10;
}
if (n == number)
{
printf("%d是阿姆斯壮数。\n", number);
}
else
{
printf("%d不是阿姆斯壮数。\n", number);
}
return 0;
}