<pre name="code" class="cpp">#include<iostream>
using namespace std;
int main()
{
double sum=0;
for(int i=0;i<6;++i)
{
if(i%2==0)
sum+=1;
else
{
sum=sum/2;
}
}
cout<<sum<<endl;
system("pause");
return 0;
原文：http://blog.csdn.net/qq_22335577/article/details/40985715