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C Exercises: Calculate the sum of the series [ x - x^3 + x^5 + ......]

C For Loop: Exercise-24 with Solution

Write a program in C to find the sum of the series [ x - x^3 + x^5 + ......].

Sample Solution:

C Code:

#include <stdio.h>
#include <math.h>
void main()
{
	int x,sum,ctr;
	int i,n,m,mm,nn;
	printf("Input the value of x :");
	scanf("%d",&x);
	printf("Input number of terms : ");
	scanf("%d",&n);
	sum =x; m=-1;
	printf("The values of the series: \n");
	printf("%d\n",x);
    for (i = 1; i < n; i++) 
    {
        ctr = (2 * i + 1);
        mm = pow(x, ctr);
        nn = mm * m;
        printf("%d \n",nn);
        sum = sum + nn;
        m = m * (-1);
	}
	printf("\nThe sum = %d\n",sum);
}

Sample Output:

Input the value of x :2                                                                                       
Input number of terms : 5                                                                                     
The values of the series:                                                                                     
2                                                                                                             
-8                                                                                                            
32                                                                                                            
-128                                                                                                          
512                                                                                                           
                                                                                                              
The sum = 410                                                                                           

Flowchart:

Flowchart: Calculate the sum of the series [ x - x^3 + x^5 + ......]

C Programming Code Editor:

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Previous: Write a program in C to display the sum of the series [ 1+x+x^2/2!+x^3/3!+....].
Next: Write a program in C to display the n terms of square natural number and their sum.

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C Programming: Tips of the Day

Clearing a char array c

It depends on how you want to view the array. If you are viewing the array as a series of chars, then the only way to clear out the data is to touch every entry. memset is probably the most effective way to achieve this.

On the other hand, if you are choosing to view this as a C/C++ null terminated string, setting the first byte to 0 will effectively clear the string.

Ref : https://bit.ly/3uM7JnL