Quiz Practice:
#include <stdio.h>
int main()
{
int i = 5, j = 10, k = 15;
```
printf("%d ", sizeof(k /= i + j));
printf("%d", k);
return 0;
```
}
C. 4 15
Correct Answer: 4 15
The important concept in this question is the sizeof operator.
The expression inside sizeof is k /= i + j. Normally, this expression would perform an assignment operation. However, when an expression is used as the operand of sizeof, the expression is generally not evaluated.
Therefore, k /= i + j does not actually execute, so the value of k remains 15.
The expression has type int, and the question states that an integer occupies 4 bytes. Therefore:
sizeof(k /= i + j) = 4
The first printf prints 4 and the second printf prints the unchanged value of k = 15.
Therefore, the output is 4 15.
Exam trick: Remember that sizeof usually determines the size without evaluating its operand.