This is what I have so far:
int question = sc.nextInt();
while (question!=1){
System.out.println("Enter The Correct Number ! ");
int question = sc.nextInt(); // This is wrong.I mean when user enters wrong number the program should ask user one more time again and again until user enters correct number.
// Its error is : duplicate local variable
}
you are declaring int question outside the loop and then again inside the loop.
remove the int declaration inside the loop.
In Java the scope of a variable is dependent on which clause it is declare in. If you declare a variable INSIDE a try or a while or many other clauses, that variable is then local to that clause.
from my understanding your requirement is to prompt the user again and again until you match the correct number. If this is the case it would as follows: the loop iterates as long as the user enters 1.
Scanner sc = new Scanner(System.in);
System.out.println("Enter The Correct Number!");
int question = sc.nextInt();
while (question != 1) {
System.out.println("please try again!");
question = sc.nextInt();
}
System.out.println("Success");
You are trying to redeclare the variable inside the loop. You only want to give the existing variable a different value:
while (question != 1) {
System.out.println("Enter The Correct Number ! ");
question = sc.nextInt();
}
This is just an assignment rather than a declaration.
Reuse the question variable instead of redeclaring it.
int question = sc.nextInt();
while (question != 1) {
System.out.println("Enter The Correct Number ! ");
question = sc.nextInt(); // ask again
}
