Question

We will simulate a dice game in which 2 dice are thrown.

• If the roll is 7 or 11, you win.
• If the roll is 2, 3, or 12, you lose
• If the roll is any other value, it establishes a point.
  • If with a point established, that point is rolled again before a 7, you win.
  • If, with a point established, a 7 is rolled before the point is rolled again you lose.

Build your algorithm incrementally. First write a program that simulates a roll of two dice, then outputs if it is a simple win (7 or 11), or a simple loss (2 or 3 or 12), or something else.

1. Here is the algorithm.

//get a random number between 1 and 6, call it d1

//get a second random number between 1 and 6, call it d2.

//get the total & print it so we know what it was

//If the total is 7 or 11 print “Congratulations, you win”

//If the total is 2 or 3 or 12 print “You lose”

//If neither of these print “something else”  

2. Now fix the part where we wrote “something else”. In this case, we rolled a number which we called total. We need to keep rolling the dice and looking at the new total each time. Output the new total each time so you can check if your program is working correctly. If the new total is the same as the total, we win. If the new total is 7, we lose. And if something else we roll again……

Sample output:

The total is 10
The new total is 8
The new total is 10
You win

Sample output:

The total is 9
The new total is 4
The new total is 8
The new total is 10
The new total is 5
The new total is 7
You lose

Sample output:

The total is 7
Congratulations, you win

Sample output:

The total is 12
You lose

Code language: Java use if-else statement

Answer 1

Since the question requires us to roll the dice and calculate total again and again, it is better if we create a function for the same. We are generating random numbers with the help of Math.random(). Everything that needs to be explained has been explained in the comments of the code. Further, the code output and code screenshot are available with this answer for your reference.

Java Program :

import java.util.*;
public class twoDice
{
   public static void main(String[] args) {
  
   // Get total
int total = getTotal();
       System.out.println("The total is " + total);
      
       // If total is 7 or 11, we win
       if(total == 7 || total == 11){
       System.out.println("Congratulations, you win");
       }
      
       // If total is 2,3 or 12, we lose
       else if(total == 2 || total == 3 || total == 12){
       System.out.println("You lose");
       }
      
       // Once a point is fixed, we calculate newTotal till total gets equal to newTotal
       else {
       int newTotal=0;
       while(newTotal!=total){
       newTotal=getTotal();
       System.out.println("The new total is "+newTotal);
      
       // If newTotal get equal to 7, we lose
       if(newTotal==7){
       System.out.println("You lose");
       return;
       }
       }
       System.out.println("Congratulations, you win");
       }
   }
  
  
   // Function to calculate our total
   public static int getTotal(){
   int min = 1;
   int max = 6;
   int range = max-min+1;
   int d1 = (int)(Math.random()*range)+min;
   int d2 = (int)(Math.random()*range)+min;
   int total = d1 + d2;
   return total;
   }
}

Code screenshot :

Output screenshots :

Solution ends.

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Thank you.

Have a good day.