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What is a recursive function?

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RRB JE ECE 22 Apr 2025 Shift 1 CBT 2 Official Paper
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  1. A function that calls itself
  2. A function that calls other functions
  3. A function without parameters
  4. A function without a return type

Answer (Detailed Solution Below)

Option 1 : A function that calls itself
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Detailed Solution

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The correct answer is: A function that calls itself

Additional Information

A recursive function is a function that calls itself in order to solve a problem by breaking it down into smaller sub-problems. This self-referential calling continues until a base case is reached, which stops the recursion. 

Key Components of Recursion:
1) Base Case

  • A condition that stops the recursion.
  • Without a base case, the function would call itself infinitely, leading to a stack overflow.

2) Recursive Case

  • The part where the function calls itself with a modified input, moving closer to the base case.
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