Practice Initialization (8.3.2) - Arrays - ICSE 10 Computer Applications

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6 sample questions

Question 1.
What does int[] numbers = new int[5]; do?
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What kind of data structure is an array?
Question 2.
Why is memory allocation important?
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What happens if we don’t allocate memory for our array?
3Question 3.
What does the declaration int[] numbers; do?
- Declares an array and allocates memory
- Only declares an array
- Throws an error
- Initializes the array with zero
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What does this statement do on its own?
4Question 4.
True or False: The statement int[] numbers = new int[5]; both declares and initializes the array.
- True
- False
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What does this statement achieve with both parts?
Question 5.
Create a class method that takes a size as an argument and returns an initialized array of integers filled with zeros.
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Think about what initial value you’d like to fill the array with.
Question 6.
Given a situation where memory allocation fails, what are some fallback methods that can be implemented?
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Consider what happens when the system runs out of memory.

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