18. Program to calculate and display sum of the following series using for loop: x + x^2 + x^3 + ... x^n
Chapter 6:
Looping Structures
Programming Exercise
Problem # 18:
Write a program to calculate and display sum of the following series using for loop:
x + x^2 + x^3 + ... x^n
Solution:
#include<iostream>
#include<conio.h>
using namespace std;
#include<math.h>
int main()
{
int x, n, num, sum=0;
cout<<"Enter the value of x:";
cin>>x;
cout<<"\nEnter the value of n:";
cin>>n;
for(num=1;num<=n;num++)
{
sum=sum+pow(x,num);
}
cout<<"\nSum of the series is:"<<sum;
return 0;
}
#include<conio.h>
using namespace std;
#include<math.h>
int main()
{
int x, n, num, sum=0;
cout<<"Enter the value of x:";
cin>>x;
cout<<"\nEnter the value of n:";
cin>>n;
for(num=1;num<=n;num++)
{
sum=sum+pow(x,num);
}
cout<<"\nSum of the series is:"<<sum;
return 0;
}
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17. Program that takes n numbers as input. It displays total positive and negative numbers.
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