Answer to Question #310475 in C for Samman

Question

Write a program to find sum of following series for a given value of ‘n’:

A) 1 + 1/2 - 1/3 + 1/4 - 1/5 + 1/6 +……+ 1/n

Answer 1

#include <stdio.h>


int main() {
    int n, i;
    double s;


    printf("Enter a number: ");
    scanf("%d", &n);


    s = 1.0;
    for(i=2; i<=n; i++) {
        if (i%2 == 0) {
            s += 1.0 / i;
        }
        else {
            s -= 1.0 /i;
        }
    }
    printf("The sum is equal %lf", s);


    return 0;
}