Question

What is the output of the following piece of C code? int a[2] = { 13, 31 }; int *p = a; printf("%d, %d", *p, *p++);

• A. 13, 31
• B. 31, 13
• C. 13, 14
• D. 13, 13

Hint:

Understand the behavior of the post-increment operator, which increments the pointer after the value is accessed.

Answer 1

The Correct Option is C

The expression \( p++ \) involves the post-increment operator. It first prints the value of \( p \), which is 13, and then increments the pointer \( p \). After the increment, the pointer points to the second element of the array (31). The next dereference of \( p \) prints 14, since the pointer now points to 31 and then increments again.
Thus, the output is \( 13, 14 \).