C program factorial recursive

After the successful compilation of the program, a message.. C Program to find factorial of a Number using Recursion. Table of contents: What is Number? What do you mean by the factorial of a number?

How to calculate the factorial of a number? What do you mean by Recursive function? By convention, Factorial of 0 is 1. The Factorial of a negative number doesn't exist.

Factorial is represented by '! Also, n! Some other factorials examples are as follows: 0! The factorial of a positive number n is given by: The factorial of n n! The factorial of 0 is always 1.

Step 1: Take a variables as n. Step 2: Then, multiply the number with its first decrement, second decrement, third decrement so forth. Step 2: Follow the Step 2, until the 1. For examples, 0!

Logic to find factorial of a Number using Recursion We ask the user to enter a positive integer number and we pass this number to a function called fact. Step 1: Inside fact function Step 2: Inside fact function, we check if the number is non-zero, if true, we execute the code inside if block orelse if num is zero , then the code inside else block gets executed. Step 3: Inside if block, we add the factorial of num-1 to the value of num. Step 4: Inside else block, we simply return 1.

Because the factorial of 0 is 1. So when num is 0, we return 1. Arrays in C Programming. Pointers in C. Find roots of a quadratic equation. Print Pyramids and Patterns. Check prime number. Print the Fibonacci series. Reference Materials string. Start Learning C. Explore C Examples. C Examples calculate the power using recursion. Reverse a Sentence Using Recursion. Convert Binary Number to Octal and vice-versa. Convert Octal Number to Decimal and vice-versa.

Convert Binary Number to Decimal and vice-versa. Copy the below source code to find the factorial of a number using recursive function program or write your own logic by using this program as a reference. Paste the factorial program into C compilers and run the program to see the result. After you compile and run the above factorial program in c to find the factorial of a number using a recursive function, your C compiler asks you to enter a number to find factorial.

After you enter your number, the program will be executed and give output like below expected output. In the above output user entered number 5 to find the factoria l.

Program execution will start from the beginning of the main function. The main function consists of multiplyNumbers recursive function, this multiplyNumbers function is called from main function with user entered number 5 as an argument. After passing number 5 to the multiplyNumbers function will call multiplyNumbers function recursive call.

Once n value is less than one, there is no recursive call and the factorial program will calculate and print output. Factorial of 5 as