#Recursive function in c programming code

Inside factorial() function #2 -ДЇactorial() #2: Inside else-block. Value of n is 3ДЇactorial() #1: About to make a recursive call to factorial() function #2 with value of n = n - 1 i.e., 2 Inside factorial() function #1 -ДЇactorial() #1: Inside else-block. Main(): About to call the factorial() function #1. Printf('factorial() #%d: About to return the value of prod = %d back to factorial() function #%d ', functionID, prod, (functionID - 1)) Printf('factorial() #%d: About to return the value of prod = %d back to main() ', functionID, prod) Value stored in prod = n * factorial(n - 1) = %d * factorial(%d) = %d * %d = %d ', functionID, n, (n- 1), n, prod/n, prod) Printf('factorial() #%d: Inside else-block. Value returned from factorial(%d) = %d ', functionID, (n - 1), prod/n) Printf('- Back to factorial() function #%d - ', functionID) decrease function id to assign to calling function increase function id to assign to called function Printf('factorial() #%d: About to make a recursive call to factorial() function #%d with value of n = n - 1 i.e., %d ', functionID, (functionID + 1), (n - 1)) Value of n is 1 so, about to return 1 back to factorial function #%d ', functionID, (functionID - 1)) Printf('factorial() #%d: Inside if-block. Printf('factorial() #%d: Value of n passed: %d ', functionID, n) Printf('- Inside factorial() function #%d - ', functionID) Printf('main(): Factorial of %d is %d ', num, fact) Value returned: %d ', functionID, fact) Printf('main(): Back from factorial() function #%d. Printf('main(): About to call the factorial() function #%d. ', functionID)

#Recursive function in c programming code

In order to understand the flow the following code has some printf() statements to print out the flow of control. Printf('Factorial of %d is %d ', num, fact) When the value of n is 1 or 0 then, F(n) returns 1.ДЇollowing is the program written in C to find the factorial of 3. In the above formula we are computing the factorial of n by recursively calling function F() and passing the value n - 1 in each call as long as the condition n > 1 is true or valid. The formula to find the factorial of a number is given below.ДЇ(n) represents the Factorial function to find factorial of n. So, if we have a number say n then, its factorial is the following: One of the most common example of recursion is the factorial problem. Recursion with terminating condition is a scenario were we have a condition that prevents the function from calling itself. Note! If no terminating condition is provided then the recursion becomes a never ending function call like an infinite loop. Recursion occurs when a function calls itself. Recursion on the other hand is a special case. If we are calling greetings() function from the main() function then the main function is the calling function and the greetings function is the called function. And when all the code statement in the called function is executed the flow of control returns back to the calling function. When we call or invoke a function then the flow of control moves from the calling function to the called function. In this tutorial we will learn about recursion in C programming language.