Which declaration correctly creates a two-dimensional integer array with 3 rows and 4 columns in C++?
Options
- A. int a[3][4];
- B. int a[4][3];
- C. int a[3,4];
- D. More than one of the above
- E. None of the above
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Quiz Practice:
Correct Answer (Detailed Explanation is Below)
A. int a[3][4];
Detailed Explanation
Answer: (A) int a[3][4];
A two-dimensional array can be thought of as an array of arrays.
The declaration:
int a[3][4];
creates an array containing 3 rows and 4 columns.
The total number of integer elements is:
3 × 4 = 12
An element can be accessed using two indexes, for example a[1][2].