C Exercises: Find the sum of specified series
C Function : Exercise-5 with Solution
Write a program in C to find the sum of the series 1!/1+2!/2+3!/3+4!/4+5!/5 using the function.
Pictorial Presentation:
Sample Solution:
C Code:
#include <stdio.h>
int fact(int);
void main()
{
int sum;
sum=fact(1)/1+fact(2)/2+fact(3)/3+fact(4)/4+fact(5)/5;
printf("\n\n Function : find the sum of 1!/1+2!/2+3!/3+4!/4+5!/5 :\n");
printf("----------------------------------------------------------\n");
printf("The sum of the series is : %d\n\n",sum);
}
int fact(int n)
{
int num=0,f=1;
while(num<=n-1)
{
f =f+f*num;
num++;
}
return f;
}
Sample Output:
Function : find the sum of 1!/1+2!/2+3!/3+4!/4+5!/5 : ---------------------------------------------------------- The sum of the series is : 34
Flowchart:
C Programming Code Editor:
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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