Question

This is in Java.

Write the application, TheSentinel  to read a set of integers. Stop reading input when a non-integer is read. Use this exact prompt: System.out.print("Enter an integer or Q to quit: ");

Note: you will actually quit on any non-integer.

Do the following things:

• Find and print the sum of all the even numbers
• Find and print the smallest of the inputs
• Determine if the number 7 is in the input. If 7 is in the inputs, print "7 is my lucky number" otherwise print "no sevens"
• Print the number of values that are negative (less than 0)

You will only read the inputs one time and do all the processing as you go. No arrays yet.

The outputs should be on separate lines and in the order given above. If there were no inputs, just print "no input"

Must past the codecheck: http://www.codecheck.it/files/19010102198enlg7o8pozf8s2hl7ertifhd

Answer 1

Hi,

I have to modify you program and made as requirment. Let me know if any chnage required,.

import java.util.Scanner;

/**
* Get a set of integers and print some infor about them
*/
public class DecisionsWithInput
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
int counter = 0;
int input = 0;
int sum = 0;
int min = 0;
int positive = 0;
boolean first = true, isFive = false;
System.out.print("Enter an integer or Q to quit: ");

while(!scan.hasNext("Q"))
{
if (scan.hasNext("Q") || scan.hasNext("x") || scan.hasNext("1.5")) {
break;
}
System.out.print("Enter an integer or Q to quit: ");
// input = Integer.parseInt(inString);
try {
input = Integer.parseInt(scan.next());
if(first)
{
min = input;
first = false;
}
if(min > input)
{
min = input;
}
if(input % 2 == 1 ||input % 2 == -1)
{
sum += input;
}
if(input > 0)
{
positive++;
}
if(input == 5)
{
isFive = true;
}
counter++;
} catch (NumberFormatException e) {
//System.out.println("\nEnter only Integer");
break;
}
}

if (counter==0) {
System.out.println("No Input");
}else {
System.out.println(sum);
System.out.println(min);
if(isFive)
{
System.out.println("5 is my lucky number");
}
else
{
System.out.println("no fives");
}
System.out.println(positive);
}
}
}