Below is my code and I would like to know how I can get it to stop after a certain number of loops.

Scanner scanner = new Scanner(System.in);
int height_requirement = 50;
while(true) {
    System.out.print("Enter height -> ");
    int height = scanner.nextInt();     
    if (height < height_requirement) {
        System.out.println("You are too short to ride the ride the roller coaster.");
    }
    System.out.println("You can ride the roller coaster");
}

CodePudding user response：

Use a for loop:

int maxLoops = 5;

Scanner scanner = new Scanner(System.in)
int height_requirement = 50;
for (int i = 0; i < maxLoops; i  ) {
    System.out.print("Enter height -> ");
    int height = scanner.nextInt();     
    if (height < height_requirement) {
        System.out.println("You are too short to ride the ride the roller coaster.");
    } else {
        System.out.println("You can ride the roller coaster");
    }
}

Also there was a small mistake at the very end of the loop.

CodePudding user response：

Normally there is for with index which you can easy control until what number to go.

If you want the solution with while try this:

Scanner scanner = new Scanner(System.in);
int height_requirement = 50;
int count = 5; // give start number
while(count > 0) { // check if count is bigger then 0
    count--; // remove -1 each time. This way while will do 5 iterations
   
    System.out.print("Enter height -> ");
    int height = scanner.nextInt();     
    if (height < height_requirement) {
        System.out.println("You are too short to ride the ride the roller coaster.");
    }
    else // put "You can ride the roller coaster" in else not to be printed every time
    { 
        System.out.println("You can ride the roller coaster");
    }
}

CodePudding user response：

You can use break statement to end the while loop so that the while statement will work only once

    Scanner scanner = new Scanner(System.in);
    int height_requirement = 50;
    while (true) {
        System.out.print("Enter height -> ");
        int height = scanner.nextInt();
        if (height < height_requirement) {
            System.out.println("You are too short to ride the ride the roller coaster.");
            break;        // To break the loop
        } else{
            System.out.println("You can ride the roller coaster");
            break;        // To break the loop 
        }

    }