Java和C语言分别实现水仙花数及拓展代码

public class Num {
    public static void main(String[] args) {
        for(int n = 100;n <= 999;n++){
            int count = 0;
            int tmp = n;
            while(tmp != 0){
                count++;
                tmp = tmp/10;
            }
            tmp = n;
            int sum = 0;
            while(tmp != 0){
                sum += Math.pow(tmp%10,count);
                tmp = tmp/10;
            }
            if(sum == n){
                System.out.println(sum);
            }
        }
    }
}

#include <stdio.h>
int main()
{
	int n = 0;
	int a, b, c = 0;
	printf("水仙花数为:\n");
	for (n = 100; n <= 999; n++)
	{
		a = n / 100;
		b = n / 10 % 10;
		c = n % 100 % 10;
		if (n == a * a * a + b * b * b + c * c * c)
			printf("%d\n", n);
	}
	return 0;
}

public class Num {
    public static void main(String[] args) {
        for(int n = 0;n <= 100000;n++){
            int count = 0;
            int tmp = n;
            while(tmp != 0){
                count++;
                tmp = tmp/10;
            }
            tmp = n;
            int sum = 0;
            while(tmp != 0){
                sum += Math.pow(tmp%10,count);
                tmp = tmp/10;
            }
            if(sum == n){
                System.out.println(sum);
            }
        }
    }
}

#include <stdio.h>
#include <math.h>
int main()
{
	int n = 0;
	
	for (n = 0; n <= 100000; n++)
	{
		int count = 1;
		int tmp = n;
		int sum = 0;
		while (tmp/10)
		{
			tmp = tmp / 10;
			count++;
		}
		tmp = n;
		while (tmp)
		{
			sum = pow(tmp % 10, count) + sum;
			tmp = tmp / 10;
		}
		if (sum == n)
			printf("%d\n", sum);
	}
	return 0;
}