C program to find Sum of Series : 1+2+3+4+….+N using Recursion

By | November 5, 2016

Find sum of Series : 1+2+3+4+….+N


Write a C program to find sum of Series : 1+2+3+4+….+N. Here’s a Simple program to find sum of Series : 1+2+3+4+….+N by creating Recursive and Iterative Functions in C Programming Language.


Algorithm : : 


  • First printf statement will ask the user to enter any integer value and the scanf statement will assign the user entered value to Number variable.
  • Next, we used For Loop to iterate between 1 and user entered value.
  • Within the For loop, we calculated the sum.
  • In the above example, user entered value is 5 it means, 1 + 2 + 3 + 4 + 5 = 15

This program allows the user to enter any integer Value. Using the Recursive and Iterative Functions we will calculate the sum of N natural Numbers.

Below is the source code for C program to find sum of Series : 1+2+3+4+….+N which is successfully compiled and run on Windows System to produce desired output as shown below :


SOURCE CODE : :



Output : :



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