- A 6 4
- B 5 7
- C 4 6
- D 6 6
- Share this MCQ
Answer:
A
Explanation:
Let's analyze the given Java code to determine its output:
Code:
public static void main(String[] args) {
int a = 5;
a++;
System.out.println(a);
a -= (a--) - (--a);
System.out.println(a);
}
Explanation:
-
Initial Code Analysis:
-
int a = 5;
initializesa
with the value5
.
-a++;
incrementsa
by1
. After this operation,a
becomes6
.
-System.out.println(a);
prints the value ofa
, which is 6. -
Second Part of the Code:
-
a--
is the post-decrement operator. It returns the value ofa
before decrementing it. So,a--
evaluates to6
, and thena
is decremented to5
.
---a
is the pre-decrement operator. It decrementsa
first, so--a
evaluates to4
, anda
becomes4
.
- Therefore, the expressiona -= (a--) - (--a)
translates toa -= 6 - 4
:6 - 4
evaluates to2
.- Thus,
a -= 2
is equivalent toa = a - 2
. Sincea
is4
at this point, this becomes4 - 2
, which results in2
.
-
System.out.println(a);
prints the value ofa
, which is 4.
Conclusion:
The output of the program is:
- 6 (after the
a++
operation) - 4 (after the
a -= (a--) - (--a)
operation)
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