By | 05.11.2016

# 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + … till N terms

Write a C Program to find sum of series : 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + … till N terms. Here’s simple C Program to find sum of series : 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + … till N terms in C Programming Language.

## Numbers in C

Normally, when we work with Numbers, we use primitive data types such as int, short, long, float and double, etc. The number data types, their possible values and number ranges have been explained while discussing C Data Types.

Here is source code of the C Program to find sum of series : 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + … till N terms. The C program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.

### SOURCE CODE : :

```/*  C Program to find sum of series : 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + ... till N terms  */

#include<stdio.h>
#include<math.h>

int main()
{
int i,N;
float sum;
int count;

printf("\nEnter total number of terms :: ");
scanf("%d",&N);

/*set sum by 0*/
sum=0.0f;

/*calculate sum of the series*/
count=1;
for(i=1;i<=N;i++)
{
sum = sum +  ( (float)(pow(count,2)) / (float)(pow(count,3)) );
count+=2;
}

/*print the sum*/

printf("\nSum of the series is :: %f\n",sum);

return 0;
}```

### Output : :

```/*  C Program to find sum of series : 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + ... till N terms  */

Enter total number of terms :: 10

Sum of the series is :: 2.133256

Process returned 0```

Above is the source code for C Program to find sum of series : 1 + 3^2/3^3 + 5^2/5^3 + 7^2/7^3 + … till N terms which is successfully compiled and run on Windows System.The Output of the program is shown above .

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