Short answerEasy2 marks
Consider the given array and answer the questions given below: int x[] = {4, 7, 9, 66, 72, 0, 16}; (a) What is the length of the array? (b) What is the value in x[4]?
Topic: Array length and elements
Previous-year question practice database
Answer
Exam answer
(a) 7 (b) 72
Explanation
(a) Count the initialiser values: 4, 7, 9, 66, 72, 0, 16 — seven of them, so x.length is 7. Note that length is a variable for arrays, written without brackets, unlike the String method length(). (b) Write the indices under the values before answering: index: 0 1 2 3 4 5 6 value: 4 7 9 66 72 0 16 x[4] is therefore 72. Counting from 1 would give 66 — the off-by-one error this question exists to catch.
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