What is the expected output for the following code?var i = 10;switch(i) { case 10: i+=2; case 12: i+=5; case 17: i+=4; default: i+=3;}console.log(i)
Question
What is the expected output for the following code?var i = 10;switch(i) { case 10: i+=2; case 12: i+=5; case 17: i+=4; default: i+=3;}console.log(i)
Solution
The expected output for the given code is 24. Here's how:
- The variable
iis initially set to 10. - The
switchstatement checks the value ofi. - The first
casematchesi(which is 10), soiis incremented by 2, makinginow 12. - However, there are no
breakstatements, so the code execution continues to the nextcase. - The next
casealso matchesi(which is now 12), soiis incremented by 5, makinginow 17. - Again, due to the lack of
breakstatements, the code execution continues to the nextcase. - The next
casealso matchesi(which is now 17), soiis incremented by 4, makinginow 21. - Finally, because there are no more
casestatements, thedefaultcase is executed, andiis incremented by 3, makinginow 24. - The
console.log(i)statement then logs the value ofi, which is 24.
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