第三次实验

#include <stdio.h>

int main(){

         int a=22;

         long int s=0;

         do{   printf("%d",s);

        s=s+a;

                   a=a+20;

         }while (a<=1002);

         return 0

}

#include<stdio.h>
int main()
{
 int a;
 int b=0;
 for(a = 22;a <= 1002;a=a+20)
 {b=b+a;}
 printf("%d\n",b);
 return 0;
}

#include<stdio.h>
int main()
{
 int s=22;
 int j=22;
 while(s<1000)
 {
  s=s+20;
  j=j+s;
 }
 printf("%d\n",j);
 return 0;
}

#include<stdio.h>

#include<math.h>

int main(){

 int n;

 int g;

 int s;

 int b;

 int j=0;  

for(n=100;n<1000;n++)

 {

 b=n/100;

 s=n/10%10;

 g=n%10;

 if(pow(g,3)+pow(s,3)+pow(b,3)==n)

 {  

printf("%d\n",n);  j=j+1;  }

 }

 printf("一共有%d个水仙花数\n",j);  

 return 0;

  }

#include <stdio.h>

#include <math.h>

int main(){

         int a,b,c,d,e;

         int sum;

         sum=0;

         for(a=1;a<=5;a++){

                   d=a*100;

                   for(b=1;b<=5;b++){

                            e=b*10;

                            for(c=1;c<=5;c++){

                                     if(a!=b&&b!=c&&a!=c){

                                               printf("%d\n",d+e+c);

                                     sum=sum+1;

                                     }

                            }

                   }

         }

         printf("%d\n",sum); 

return 0;

第三次实验

原文：https://www.cnblogs.com/p201821440012/p/10819712.html