Given the following array definition: int nums[5] = {1

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Question

Given the following array definition:

 int nums[5] = {1, 2, 3};

What will the following statement display?

cout << nums[3];

Solution

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Answered 1 year ago

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Let's mark an array's size declarator as x and the number of elements in the initializer list as y.

When an array definition statement contains both the initializer list and the array size declarator, where x is larger than y, the elements in the initializer are initialized into the first x slots in the array. The rest of the array is then filled with the default value, which in case of numeric types is 0.