SumProdDifQuo.java

package a1_jac444;

import java.util.Scanner;
/*
Alistair Godwin
SID: 020079158
UID: agodwin
Prof: Mehrnaz Zhian
A1 - Question 1: 2 Int manipulation



This program asks the user for 2 ints, which it will verify are ints(if not set to 0) and then display
 sum, product, quotient, and divisor to the user. The program loops until the 
*/
	public class SumProdDifQuo {
	
			public static void main(String[] args) {
				
				int exit = 0;
				//Loop, exit on int 0 entry
				do{
					
					System.out.println("======Assignment 1: Question 1: Sum, Product, Differance, and Divisor.=====\n\n");
					//Make object
					Scanner inp = new Scanner(System.in);
					
					System.out.println("Enter the first Int: ");
					
					//Get Int A with safety
					int a = 0;
					if (inp.hasNextInt()){
						a = inp.nextInt();
					}else{
						System.out.println("That was not an int. It's now 0");
						inp.next(); //Skip and protect buffer
					}
					System.out.println("\nInt a: " + a);
					System.out.println("Enter the second Int: ");

					//Get Int B with safety
					int b = 0;
					if (inp.hasNextInt()){
						b = inp.nextInt();
					}else{
						System.out.println("That was not an int. It's now 0\n");
						inp.next(); //Skip and protect buffer
					}
					System.out.println("\nInt b: " + b);
					
					//===========Output and method calls=============//
					System.out.println("The Sum of "+ a +" and "+  b + " is: " + Sum(a,b));
					System.out.println("The Product of "+ a +" and " + b + " is: " + Product(a,b));
					System.out.println("The Differance of "+ a +" and " + b + " is: " + Difference(a,b) + " digits.");
					System.out.println("The Quotient of "+ a +" divided by " + b + " is: " + Quotient(a,b));
					//================================================//
					
					//Query exit
					System.out.println("Enter 0 to exit the program, or anything else to continue...");
					if (inp.hasNextInt()){
						exit = inp.nextInt();
					}else{
						exit = 1;
					}
				
					//Graceful exit and closure of scanner
					if (exit == 0) 
						inp.close(); 
				}while(exit != 0);
				
				System.out.println("\nGoodbye!");
			}

		//Return sum of 2 ints
		public static int Sum(int a, int b){
			return (a + b);
		}
		//Return product of 2 ints
		public static int Product(int a, int b){
			return (a * b);
		}
		
		//Returns the difference(positive digit) between two ints
		//Checks for greater value digit for positive difference.
		public static int Difference(int a, int b){
			if(a > b){
				return (a - b);
				
			}else if(a < b) {
				return (b - a);
				
			}else{
				return 0;
			}
		}
		//Returns the double quotient of two ints. 
		//Also prevent a divide by 0 scenario.
		//Since ints dont divide kindly as ints(truncation), would like double next time.
		public static int Quotient(int a, int b){
				if(a == 0 || b == 0){
					return 0;
				}
				else{
					 int c = ( a / b);
					 return c;
				}
			}
			
			
}