展开全部
#include<iostream>
#include<iomanip>
using namespace std;
int main(){
int sum=0,c=0,count=0;
for(int i=1;i<1001;i++){
if(i%5==0){
if(c%15==0 && c!=0) cout<<endl;
cout<<setw(4)<<i<<" ";
c++;
count++;
sum+=i;
}
}
cout<<"\n\n和为"<<sum<<endl;
cout<<"平均值为"<<(double)sum/(double)c<<endl;
}
展开全部
#include <stdio.h>
int main()
{
int i,sum=0,count=0;
float ave=0;
for(i=1;i<1001;i++)
{
if(i%5==0)
{
sum=sum+i;
count=count+1;
printf("%-10d",i);
if(count%15==0)
printf("\n");
}
}
ave=sum*1.0/count;
printf("\n");
printf("Summation of numbers above is :%d\n",sum);
printf("Average value of numbers above is :%0.2f\n",ave);
return 0;
}
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