At which index does the first element of a C++ array normally begin?

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Answer: (A) 0

C++ arrays use zero-based indexing. Therefore, the first element is stored at index 0.

For an array:

int a[5];

the valid indexes are:

0, 1, 2, 3, 4

Thus, an array containing 5 elements has a last valid index of 4, not 5.

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