Can someone help me understand this by showing each step, the answer must give u

Question

Can someone help me understand this by showing each step, the answer must give us 4 accorinding to the teacher.

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If x is equal to 2 before entering the switch statement, what will

the value of x be after the switch statement executes?

switch (x + 1)

{

case 9 : x += 4;

case 4 :

case 7 : x += 3;

case 6 : x -= 5;

case 3 : x = 6;

case 8 : x -= 2;

case 1 :

}

Explanation / Answer

The answer 4 is true because

inititally we have x=2 before entering the switch

then in swtich it performs x+1 which makes x=3 now x enters switch block

now case 9 is false so it will not be executed

case 4 is also false so it is also skipped

case 7 is false either

case 6 is false

case 3 is true so x=6 is executed so now x=6

now as there is no break statement so case 8 will also be executed so x-=2 which means x=x-2 which makes x=4

then it enters case 1 where there are no statements to be executed so at the end of switch x will be equal to 4.

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