C Programming

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Topic : Functions

10.5 EXERCISE 5 Open a new file called lab10ex5.c The factorial of a non-negative integer number n, denoted by n! is the product of all positive integers less than or equal to n. For example, 5! = 5 x 4x3x2x1 = 120 Write a function that calculates the factorial of a number input, n, by the user int factorial (void) that does not take any input arguments and does returns the final value of factorial n. The value of factorial n is printed out to the terminal screen. The user is prompted to input variable n via the terminal screen