find sum of series c++ code

BOOKC, this time share about find sum of series c++ code
Find sum of given series in which user enter a number and program calculate series using while loop.
Series example:
if input number = 100
1/1 +1/2 +1/4 +.......+ 1/100


//this program will calculate sum of following series
// 1/1 +1/2 +1/4 +.......+ 1/100.
#include<iostream>
#include<conio.h>
using namespace std;
int
main()
{

float
n=1.0;
float
d=2.0;
float
sum=1.0;
float
temp=0.0;
cout<<"Enter a number:";
int
number;
cin>>number;
while
(d<=number) //loop will start from denominator=2 & steps 1,2 &3 continues till d=100.
{
temp=n/d; // 1) temp=1/2=0.5
sum=sum+temp; // 2) sum=1+0.5=1.5
d=d+2; // 3) d=2+2=4
}
cout<<"sum of series is:"<<sum<<endl;
getch();
return
0;

}


Output:

It is recommended to dry run the code on paper and changes the series to understand more.
Find more example here: c++ simple examples source codes

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