{Help} Explain This Please😉

Question

int x=0;
int y=2;

do{
x+=y;
}

while (x<4);
System.out.println(++x);

Output is 5

Explain it please😉😉

Answer 1

@Khairul
loop1)x=2 & condition is true
loop2)x=4 & condition is false ... so loop stops
print (++4) ... print 5

@Nitish
x+=2; means x=x+2;

Answer 2

What about x+=y. ??

Answer 3

when x comes out of do-while loop, its value will be 4. In system.out.print method it is first incremented to 5 (since its prefix)and the printed to 5

Answer 4

first x=0. since its do-while, loop get executed once before condition, then x=2. then it check for condition, it is sactisfied. then again statement in loop is executed and x=4 now. x+=2 is equivalent to x=x+2

Answer 5

Thanks😉😉

Answer 6

because ++x will print value after incrementing x.
hence, ++4=5.

Answer 7

The output of this code is 5 because the code will keep on running as long as x<4, but as soon. as x is equalled to 5 the program stop running.

Answer 8

x+=y means x=x+y

Answer 9

x =+y means x= x+y

Answer 10

on the first time we get
x=0+2 // now the value of x sets to 2
entering while loop
it gets incremented and then displayed as 3
ON 2 time now the value of x is 2
so now
x=2+2 // this produces result x=4
on entering the while loop
x value gets incremented to 5 and displayed

Answer 11

If you try to do it by step you have :
x=0;
y=2;

x += y; (which means x = x +y;)
which makes the x == 2
Then you check if x<4 (it is true, as 2<4),
so you repeat what's inside the awhile brackets.
So we again have x+= y, which as a result, gives x==4. Now the while condition is false, as 4 < 4 is a false statement, so the loop stops. Now we print the x value is 4 and we print ++x, which raises x's value by one and returns the new value, so it returns 5

Answer 12

@gaurav answer my question

Answer 13

Shohsanam
First iteration of the loop:
x=1+2=3

As 3< 7, the loop run for the second time.

2nd iteration:
x=3+2=5

As 5<7, the condition is true. The loop iterates for 3rd time.

3nd iteration:
x=5+2=7

Answer 14

correct answer for below question

int x = 1;
while (x <=

7

) {
System.out.println("in a loop");

x

++;
}

Answer 15

Currect 9

Answer 16

How many times will this loop run?
int x = 1;
for ( ; x < 7; )
{
x+=2;
}
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