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C Exercises: Calculate the sum of the series [ 1+x+x^2/2!+x^3/3!+....]

C For Loop: Exercise-23 with Solution

Write a program in C to display the sum of the series [ 1+x+x^2/2!+x^3/3!+....].

Sample Solution:

C Code:

#include <stdio.h>

void main()
{
	float x,sum,no_row;
	int i,n;
	printf("Input the value of x :");
	scanf("%f",&x);
	printf("Input number of terms : ");
	scanf("%d",&n);
	sum =1; no_row = 1;
	for (i=1;i<n;i++)
	{
	  no_row = no_row*x/(float)i;
	  sum =sum+ no_row;
	}
	printf("\nThe sum  is : %f\n",sum);
} 

Sample Output:

Input the value of x :3                                                                                       
Input number of terms : 5                                                                                     
                                                                                                              
The sum  is : 16.375000                                                                                       

Flowchart:

Flowchart: Calculate the sum of the series [ 1+x+x^2/2!+x^3/3!+....]

C Programming Code Editor:

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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