java Create a do-while loop that asks the user to enter two numbers. The numbers

Question

java

Create a do-while loop that asks the user to enter two numbers. The numbers should be added and the sum displayed. The loop should ask the user whether he or she wishes to perform the operation again. If so, the loop should repeat; otherwise it should terminate

Sample Run1

Enter two numbers: 3 15

Do you want another operation: Yes

Enter two numbers: 45 56

Do you want another operation: No

Output1: Sum = 119

Sample Run2

Enter two numbers: 33 150

Do you want another operation: Yes

Enter two numbers: -56 56

Do you want another operation: Yes

Enter two numbers: 58 15

Do you want another operation: Yes

Enter two numbers: 123 87

Do you want another operation: No

Output2: Sum = 466

Explanation / Answer

Java Program:

import java.util.*;

public class Sum

{

public static void main(String[]arg)

{

//Scanner class object to read input from keyboard

Scanner sc=new Scanner(System.in);

//variable declaration

int sum=0; //holds the sum

String Exit = null;

//storing all the integer values in an array list

ArrayList<Integer> al= new ArrayList<Integer>();

//do while loop starts

do

{

//asks the user to enter two numbers.

System.out.print(" Enter two numbers:");

String input=sc.nextLine();

//dividing the input string based on the space

StringTokenizer st=new StringTokenizer(input," ");

//while loop to store the each number in the array list

while(st.hasMoreTokens())

{

//adding each number in the array list

al.add(Integer.parseInt(st.nextToken()));

}

//asking to continue or exit

System.out.print("Do you want another operation:");

Exit = sc.next();

//skips the extra new line

sc.nextLine();

}while( !("No".equalsIgnoreCase(Exit))) ;

//do while loop ends

//iterator to sum the all integers present in the array list

Iterator<Integer> it=al.iterator();

while(it.hasNext())

{

//summing up

sum=sum+it.next();

}

//displays the output

System.out.println("Sum ="+sum);

}

}

Sample Run1:

Enter two numbers:3 15
Do you want another operation:Yes

Enter two numbers:45 56
Do you want another operation:No
Sum =119

Sample Run2:

Enter two numbers:33 150

Do you want another operation:Yes

Enter two numbers:-56 56
Do you want another operation:Yes

Enter two numbers:58 15
Do you want another operation:Yes

Enter two numbers:123 87
Do you want another operation:No
Sum =466

Related Questions

Navigate

• Browse (All)
• Browse J
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.