What is the output of the following code?

Question

int a=3;
int b=2;
b=a++;
cout<<++b;
How is it 4:|

Answer 1

++a is pre_increment(first increments then assigns the value) , a++ is post increment(first assigns then increments) .
For (b=a++) b gets the value of 'a' i.e 3.
(++b) increments the value of b by 1 so the value of 'b' becomes 4.

Answer 2

Mr. Memol the question was how is it 4 :p

Answer 3

It's 4, first you set b=a++=3 (if it's b=++a=4) and then you do ++b so it equals 4

Answer 4

The output is 4

Answer 5

bumping this how is it 4

Answer 6

The output must be 3 and not 4

Answer 7

Mr. Mohsin I didn't attention it.
Besides he asked first "What is the output of the following code?"
Ammar I explain sth and if you don't understand again,ask me.
If a=3 and in a code you type a++ and type cout<<a; the output again is 3. But if you type ++a the output is 4.
In first part if you want to print a for second time the output is 4.
In this example when you say b=a++, b equals 3. And when you say cout<<++b; b equals 4.