Assume that an integer occupies 4 bytes. What will be the output of the following C program?
#include <stdio.h>
int main()
{
int a[5] = {1, 2, 3, 4, 5};
```
printf("%d", sizeof(a));
return 0;
```
}
Options
-
A.
4
-
B.
5
-
C.
20
-
D.
More than one of the above
-
E.
None of the above
Correct Answer (Detailed Explanation is Below)
C.
20
Detailed Explanation
Correct Answer: 20
The array contains 5 integer elements.
Each integer occupies 4 bytes. Therefore, the total memory occupied by the array is:
5 × 4 = 20 bytes
Thus, sizeof(a) returns 20 when a is an actual array in this context.
Exam point: sizeof(array) gives the size of the complete array, not the number of elements.
