Answer to Question #323167 in C++ for Lexis

Question

Write a program that approximate e using a loop that terminates the difference between the two successive values of e is less than 0.0000001

Answer 1

#include <iostream>
#include <iomanip>
using namespace std;


int main() {
    double sum = 1;
    double a = 1;
    int i = 1;


    while (a >= 1e-7) {
        a /= i;
        sum += a;
        i++;
    }
    cout << "Approximation to e " << fixed 
         << setprecision(8) << sum << endl;
    return 0;
}