Multiple choice

Which of the following is an invalid array declaration?

  1. int a[ ];

  2. int a[5];

  3. int a[ ] = {4, 2, 5, 6, 7};

  4. int a[5] = {4, 2, 5, 6, 7};

  5. none of above

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A Correct answer
Explanation

int a[ ]; is an invalid array declaration because size of array is not specified.

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