# Sum of series C programs

This section contains the solved C programs based on some mathematical series with output and explanation.

## List of sum of the series programs

1. C program to calculate the sum of the series 1-2+3-4+5-6+7-8...N terms
Given the series 1 -2+3-4+5-6+7-8 … N terms, and we have to find the sum of all values using C program.
2. C program to calculate the sum of the series 1+(1+2) +(1+2+3) +(1+2+3+4) +...+(1+2+3+...+n)
Given a series: 1+(1+2) +(1+2+3) +(1+2+3+4) +…. +(1+2+3+…+n), and we have to find the sum of all elements using C program.
3. C program for sin(x) series.
Sin x is a series of sin function of trigonometry; it can expand up to infinite number of term. Through this series, we can find out value of sin x at any radian value of sin x graph.
4. C program to find the sum of series 1^2/1! + 2^2/2! + 3^2/3! + 4^2/4! + ... n^2/n!.
In this C program, we are going to find the sum of series 1^2/1! + 2^2/2! + 3^2/3! + 4^2/4! + ... n^2/n! , where value of n will be provided by the user.
5. C program to find the sum of series 1.2/3 + 2.3/4 + 3.4/5 + 4.5/6 + ... + n(n +1)/(n+2).
In this C program, we are going to find the sum of series 1.2/3 + 2.3/4 + 3.4/5 + 4.5/6 + ... + n(n +1)/(n+2) , where value of n will be provided by the user.
6. C program to find the sum of series x + x/2! + x/4! + ... + x/n!.
In this C program, we are going to find the sum of series x + x/2! + x/4! + ... + x/n!, where value of x and n will be provided by the user.
7. C program to calculate the sum of the series 1^3 -2^3 + 3^3 - 4^3 + ... N^3
In this program, we are going to learn how can we find the solution (calculate the sum) of the series 1^3 -2^3 + 3^3 - 4^3 + ... N^3, where N will be given by the user.
8. C program to calculate the sum of series 1 +1/x^1 + 1/x^2 + 1/x^3 ... + 1/x^n terms.
Here, we are going to implement a c program that will find the sum of series 1 +1/x^1 + 1/x^2 + 1/x^3 ... + 1/x^n terms.
9. C program to calculate sum of the series 1 + 11 + 111 + 1111 + ... N terms.
Here, we are going to implement a c program that will find the sum of series 1 + 11 + 111 + 1111 + ... N terms.

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