Question

Develop a while loop that takes an integer input from the keyboard, convert the integer to double and multiply that result input by 0.5 and outputting the result as a floating point number. Continue the loop until a -1 is entered. Allow for a -1 to be entered as an initial input resulting in no output.

Answer 1

while(true){
           Scanner scanner = new Scanner(System.in);
           System.out.print("Enter the Number : ");
           int number=scanner.nextInt();
           if(number==-1){
               break;
              
           }else{
           double numberInDouble=(double)number;
           float result=(float)(numberInDouble*0.5);
           System.out.println("Result = "+result);
                  
           }
          
       }

Test Run :

Enter the Number : 5
Result = 2.5
Enter the Number : 8
Result = 4.0
Enter the Number : -1