Code:

 

/* Lab 2: Basic Computation
Programmer: W. Tong
Date: August 30, 2011
Filename: Computation.java
Purpose: This program displays a simple computation.
*/
import java.io.*;
import java.util.Scanner;

public class Computation {
public static void main(String[] args) {
//create constructop
Scanner input = new Scanner(System.in);

//create variables
int x1;
int x2;
double a, b, c;

x1=10;
x2=5*x1;
System.out.println("Hello, see how my computation.");
System.out.println();
System.out.println("Enter x1 = " + x1);
System.out.println("Enter x2 = " + x2);
System.out.println("x1 + x2 = " + (x1+x2));
System.out.println("x2 - x1 = " + (x2-x1));
System.out.println("x1 * x2 = " + (x1*x2));
System.out.println("x1 / x2 = " + (x1/x2));
System.out.println("x1 mod x2 = " + (x1 % x2));
System.out.println();

System.out.println("Now, we do computation with real numbers.");
System.out.println("And we get the values from keyboard.");
System.out.print("Enter the value for a: ");
a = input.nextDouble();
System.out.print("Enter the value for b: ");
b = input.nextDouble();
System.out.println("Enter a = " + a);
System.out.println("Enter b = " + b);
System.out.println("Compute a + b = " + (a+b));
System.out.println("Compute a - b = " + (a-b));
System.out.println("Compute a x b = " + (a*b));
System.out.println("Compute a / b = " + (a/b));
System.out.println();
}
}

bapezilla

May 7 2012, 01:34 AM

i've found that working in a simple text editor like jEdit for pc or textwrangler for mac and then compiling and running the programs from the terminal works best when you're only writing simple code like this.