fork download
copy 
  1. //Q45. Write a program to find the sum of the series: 2/3 + 4/7 + 6/11 + 8/15 + ... up to n terms.
  2.  
  3. #include <stdio.h>
  4.  
  5. int main() {
  6.     int n;
  7.     float sum = 0;
  8.     printf("Enter n: ");
  9.     scanf("%d", &n);
  10.  
  11.     int num = 2, den = 3;
  12.     for (int i = 1; i <= n; i++) {
  13.         sum += (float)num / den;
  14.         num += 2;
  15.         den += 4;
  16.     }
  17.  
  18.     printf("Sum of series = %.2f\n", sum);
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
3
stdout
copy 
Enter n: Sum of series = 1.78
https://ideone.com/qk7uGd
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!