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Jonathan Trinh
1,426 PointsLast exercise challenge 2/3
I do not understand this questions how do you continually prompt the user in a do while loop. And declare a response outside of the do while loop? .
// I have initialized a java.io.Console for you. It is in a variable named console.
do {
String response = console.readLine ("Do you understand do while loops?");
String response; do{
reponse = promt;
} while (response.equals("No");
2 Answers
michaelcodes
5,604 PointsSo what we did was declare the String variable response outside of the "do".
String response;
do {
response = console.readLine ("Do you understand do while loops?");
}
The reason we declare the String outside of it is because of something in java called "scope" of the variable.
If we use (string response = console.readLine) we can't use our variable anywhere else aside from inside the do { }. This is not very useful to us.
So by first declaring the String outside of the do { }
String response;
It allows us to access it further down in the code. Since we just declared the variable, we don't need to include "String" again when we set it to a value:
response = console.readLine ("Do you understand do while loops?");
Hope this helps! if you have any other questions let me know.
michaelcodes
5,604 PointsHi there! In order to print the response outside of the do-while loop you must declare the variable "response" outside of the scope of the do-while loop. This is known as the "scope" of the variable.
String response; //declared outside of the scope so we can access it later on outside the do-while
do {
response = console.readLine ("Do you understand do while loops?");
} while (response.equals("No")); //once this is NOT equal to "No" the loop will end
//and the program continues
//So now we can print out the line, because response is declared outside the scope (Part 3 of challenge)
console.printf("Because you said %s, you passed the test!", response);
Hope this helps! happy coding!
Jonathan Trinh
1,426 Pointsdo { response = console.readLine ("Do you understand do while loops?"); } while (response.equals("No"));
Okay I got it thank you, another question is why was the String in (string response = console.readline) was remove?? so now its just (response = console.readline)???
Jonathan Trinh
1,426 PointsJonathan Trinh
1,426 PointsHey thanks a lot this makes perfect sense to me now :)