Q: How many elements does the array int x[20]; contain?

Answer: C

Explanation:

The declaration:

int x[20];

creates an array that can store 20 elements.

The number inside the brackets [20] specifies the total number of elements
Array indexing starts from 0
Valid indices range from 0 to 19

So even though the last index is 19, the array still contains 20 elements.

Correct Answer: C) 20

Description:
x[20] means the array size is 20, not 19.

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