The following segment of code contains at least one error - mark ALL of the errors that occur in this segment of code:int val = 0;while ( val < 10 ) { String msg = ""; int num = val; while ( num < 10 ) { if (num % 2 == 0 ) { msg = msg + num; num = num + 1; } }}System.out.println(msg);Group of answer choicesThe variable msg is used outside of its scopeThe variable num is used outside of its scopeThe inner loop will loop foreverThe outer loop will loop foreverYou cannot add together a String and an int value
Question
The following segment of code contains at least one error - mark ALL of the errors that occur in this segment of code:int val = 0;while ( val < 10 ) { String msg = ""; int num = val; while ( num < 10 ) { if (num % 2 == 0 ) { msg = msg + num; num = num + 1; } }}System.out.println(msg);Group of answer choicesThe variable msg is used outside of its scopeThe variable num is used outside of its scopeThe inner loop will loop foreverThe outer loop will loop foreverYou cannot add together a String and an int value
Solution
The errors in the code are:
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The variable msg is used outside of its scope: The variable msg is declared inside the while loop and is being used outside of it in the System.out.println statement. This will cause a compile-time error because the scope of msg is limited to the while loop where it is declared.
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The inner loop will loop forever: The increment of the variable num is inside an if condition that checks if num is even. If num is odd, it will not be incremented and the inner loop will run indefinitely.
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The outer loop will loop forever: The variable val is never incremented within the outer loop, so the condition val < 10 will always be true, causing an infinite loop.
The other two options are not errors:
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The variable num is not used outside of its scope: The variable num is declared and used only within the while loop, so there is no scope issue with num.
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You can add together a String and an int value in Java: In Java, you can use the + operator to concatenate a String and an int. The int is automatically converted to a String before the concatenation.
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