C#.NET — Predict output with try/catch for invalid numeric input. Program reads an index and stores val = 55 in an array element. Input provided: "ABCD". What is printed?

Difficulty: Easy

Correct Answer: Bad Format Remaining program

Explanation:


Introduction / Context:
This program converts user input to an integer index and assigns into a 5-element array. It includes two specific catch blocks for FormatException and IndexOutOfRangeException. We feed a non-numeric string to test the exception path.



Given Data / Assumptions:

  • User input: "ABCD".
  • Conversion: Convert.ToInt32(Console.ReadLine()).
  • Array: int[] a = new int[5].
  • Catches: FormatException, IndexOutOfRangeException.
  • Final print: "Remaining program " after try/catch.


Concept / Approach:
Non-numeric input to Convert.ToInt32 throws FormatException, which is caught by the first catch. The code prints its message and then continues to the subsequent Console.Write for the remainder of the program.



Step-by-Step Solution:

Input "ABCD" → Convert.ToInt32(...) throws a FormatException. First catch runs: Console.Write("Bad Format "). After catch, execution proceeds to Console.Write("Remaining program "). Concatenated output: "Bad Format Remaining program".


Verification / Alternative check:
Substitute input "6": conversion succeeds; IndexOutOfRangeException may occur on a[6], handled differently (not this question).



Why Other Options Are Wrong:
They omit one of the printed parts or reference the wrong exception.



Common Pitfalls:
Forgetting that execution continues after catch blocks unless rethrow or return occurs.



Final Answer:
Bad Format Remaining program

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