# How to Get Sum of Series 1+3+5+7+…. +n in C Program

It is easy to get sum of series 1 + 3 + 5 + 7 + . . . + n in C program. In this tutorial, I’ll show you how to do it in easy way in C program. Here is a simple code for it:

`#include <stdio.h>`

```
```

`int main()`

{

int n,i;

int s=0;

printf("Enter the value of n of the series: ");

scanf("%d",&n);

printf("Sum of the series: ");

for (i =1; i <= n; i=i+2)

{

s=s+i;

if((i+2)>=n)

printf("%d = %d ",i,s);

else

printf("%d + ",i);

}

return 0;

}

Output:

Enter the value of n of the series: 10

Sum of the series: 1 + 3 + 5 + 7 + 9 = 25

In above code, I have sum up the series with a equation first. Then, I have tried to show number, plus sign, result and in a word equation by iterating from 1 to n using for loop.

In this tutorial, I have shown how to get sum of series 1 + 3 + 5 + 7 +…. + n in C Program. Hope you have enjoyed the tutorial. If you want to get updated, like the facebook page http://www.facebook.com/freetechtrainer and stay connected.