Question

1+1/2-1/3 +1/4-1/5+1/6-1/7+1/8-1/9+1/10用c++怎么编?

最好用while 循环语句哦，，别的我还没学。

Answer 1

#include <iostream.h>
void main()
{
double a=1;
double b=-1;
double c=1;
double m=1;
for(int i=2;i<=10;i++)
{
m=(-1)/((double)i);
if(i%2==0)
{
c=c+m*b;
}
else
{
c=c+m;
}
cout<<c;

}
cout<<c;
cin>>c;
}

另附while
#include <iostream.h>
void main()
{
double a=1;
double b=-1;
double c=1;
double m=1;
int i=2;
while(i<=10)
{
m=(-1)/((double)i);
if(i%2==0)
{
c=c+m*b;
}
else
{
c=c+m;

}
cout<<c;
i++;
}
cout<<c;
cin>>c;
}

Answer 2