In the following code, I am trying to prompt a user to enter a number, and if it is less than 1, ask for another positive number.
It seems to be working until the positive number is input but the program will print a final error message after the positive number is given.
How do I stop this error message from being printed after the positive number is input?
System.out.println("Enter number");
int x = 0;
while (x < 1)
{
x = input.nextInt();
System.out.println("ERROR - number must be positive! Enter another");
}
You can add a break statement, which exits a loop, like so:
while (x < 1)
{
x = input.nextInt();
if (x >= 1)
{
System.out.println("Mmm, delicious positive numbers");
break;
}
System.out.println("ERROR - number must be positive! Enter another");
}
Or alternatively:
while (x < 1)
{
x = input.nextInt();
if (x < 1)
{
System.out.println("ERROR - number must be positive! Enter another");
}
else
{
System.out.println("Congratulations, you can read directions!");
}
}
Read the initial number unconditionally before the loop. Then inside the loop move the printout above the nextInt() call.
System.out.println("Enter number");
int x = input.nextInt();
while (x < 1)
{
System.out.println("ERROR - number must be positive! Enter another");
x = input.nextInt();
}