习题2-1 水仙花数（daffodil）

#include <stdio.h>int main(){int num;for(num = 100; num <= 999; num++){int bai,shi,ge;bai = num / 100;shi = num / 10 % 10;ge = num % 10;if(bai*bai*bai+shi*shi*shi+ge*ge*ge == num){printf("%d\n",num);}}return 0;}