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Flowchart for Factorial (Recursion)

A fact(n) function that calls itself: fact(5) waits for fact(4), down to fact(1). Open Values and Step to watch the call stack.

RecursionAdvanced

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The blocks it uses

Built from 6 kinds of block, between Start and End. Each one has a guide.

AskAsk the user for input
CallRun a function
TellShow a message
FunctionMake your own block
DecisionMake a decision
ReturnFinish a function

Factorial (Recursion) in Python, Java, C++, C# and JavaScript

B4Coder writes the same program as real code. Change the flowchart in the editor and the code changes with it.

1def fact(n):2    if n <= 1:3        return 14    else:5        smaller = fact(n - 1)6        return n * smaller7
8
9n = int(input("Factorial of which number? "))10answer = fact(n)11print(str(n) + "! = " + str(answer))

How each block becomes code: Python · Java · C++ · C# · JavaScript

Learn the ideas behind it

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