cppbeginner10 minutes

Refactor Messy Function to Calculate Factorial

Improve the readability and structure of a simple factorial calculation function in C++ without changing its behavior.

Challenge prompt

You are given a function that calculates the factorial of a number, but the code is poorly formatted and uses unclear variable names. Refactor the function to make it clean, readable, and maintainable while preserving the original functionality.

Guidance

• Rename variables to meaningful names.
• Use consistent indentation and spacing.
• Replace unnecessary code with cleaner alternatives.

Hints

• Factorial of n (n!) is the product of all positive integers from 1 to n.
• Consider using a descriptive loop variable name.
• Avoid redundant code such as extra conditions inside the loop.

Starter code

int fact(int n){int f=1,i=1;while(i<=n){f=f*i;i++;}return f;}

Expected output

fact(5) returns 120

Core concepts

loopsfunctionsvariablescode readability

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