C++ Exercises: Display the sum of the series 1+x+x^2/2!+x^3/3!+....
C++ For Loop: Exercise-24 with Solution
Write a program in C++ to display the sum of the series [ 1+x+x^2/2!+x^3/3!+....].
Sample Solution:
C++ Code :
#include <iostream>
using namespace std;
int main()
{
float x, sum, no_row;
int i, n;
cout << "\n\n Display the sum of the series [ 1+x+x^2/2!+x^3/3!+....]\n";
cout << "------------------------------------------------------------\n";
cout << " Input the value of x: ";
cin >> x;
cout << " Input number of terms: ";
cin >> n;
sum = 1;
no_row = 1;
for (i = 1; i < n; i++)
{
no_row = no_row * x / (float)i;
sum = sum + no_row;
}
cout << " The sum is : " << sum << endl;
}
Sample Output:
Display the sum of the series [ 1+x+x^2/2!+x^3/3!+....] ------------------------------------------------------------ Input the value of x: 3 Input number of terms: 5 The sum is : 16.375
Flowchart:

C++ Code Editor:
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Next: Write a program in C++ to find the sum of the series [ x - x^3 + x^5 + ......].
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