题目：打印出所有的“水仙花数”，所谓“水仙花数”是指一个三位数，其各位数字立方和等于该数

#include"stdio.h"
main()
{
int i,a,b,c,d,
for(i=100;i<=999;i++)
{
a=i/100;b=(i-a*100)/10;c=i%10;
if(i=a*a*a+b*b*b+c*c*c)
printf("%d,",i);
}

main()
{
int score;
char grade;
printf("please input a score\n");
scanf("%d",&score);
grade=score>=90?'A':(score>=60?'B':'C');
printf("%d belongs to %c",score,grade);
}

#include<iostream>
using namespace std;
int main(){
for(int i=100,b,temp; i<1000; i++)
b=0;
temp=i/100;
b+=temp*temp*temp;
temp=i%100/10;
b+=temp*temp*temp;
temp=i%10;
b+=temp*temp*temp;
if(i==b)
cout<<i<<endl;
}

main()
{int c,c1,c2,c3;
printf("'water flower'number is:");
for(c=100;c<1000;c++)
{c1=c/1