C program to find factorial of a number using Ternary operator with Recursion1 min read

Recursion refers to the function calling itself directly or in a cycle.

Before we begin, you should have the knowledge of following in C Programming:

This C program calculates the factorial of a given number using recursion and the ternary operator. Here’s a brief explanation:

  1. Function Definition: factorial(int n)
    • This function calculates the factorial of a number n.
    • It uses a ternary operator (? :) to check if n is 1 or 0. If true, it returns 1; otherwise, it recursively calls itself with the argument n - 1 multiplied by n.
  2. Main Function: main()
    • The main function begins the execution of the program.
    • It declares two variables: num for user input and result to store the factorial.
    • The user is prompted to enter a number, which is then stored in the variable num.
    • The factorial function is called with num as an argument, and the result is stored in the result variable.
    • The program prints the factorial result.
  3. Usage of getch():
    • The getch() function is used to hold the console window open until a key is pressed. Note that this function is not standard and may not be available on all systems.
  4. Output:
    • The program outputs the calculated factorial for the given input.
  5. Termination:
    • The program returns 0, indicating successful execution.

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