Answer & Solution
Answer: Option E
Solution:
Step 1:
Initialize
a with the value 10.
Step 2:
Declare
b without initialization (the initial value is undefined).
Step 3:
Evaluate
a++ (post-increment):
- The current value of
a is 10.
- After evaluating
a++,
a becomes 11.
Step 4:
Evaluate
++a (pre-increment):
- ++a increments
a to 12 and returns the updated value, which is 12.
Step 5:
Sum the values obtained in steps 3 and 4: 10 + 12 equals 22.
Step 6:
Assign the sum (22) to
b.
Step 7:
The
printf function follows the stack Last-In-First-Out (LIFO) concept, which means that the expressions are evaluated from right to left.
Step 8:
The first expression to be evaluated is
++a:
- ++a increments
a to 13 and returns the updated value, which is 13.
Step 9:
The next expression to be evaluated is
a++:
- a++ returns the current value of
a (13) and then increments
a to 14.
- The returned value is 13.
Step 10:
Finally, the last expression to be evaluated is
a, which has the current value of 14.
Therefore, the output of the program will be:
22 13 14 14
This output corresponds to the value of
b, followed by the evaluated values of
a++,
a, and
++a, respectively, in the
printf statement.