import java.lang.*;
import java.io.*;

public final class SimpleCalculator {
  public static void main(String[] args) {
    BufferedReader bufread = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Welcome to the world's most simple (also cheap) electronic calculator");
    System.out.print("\n\nEnter an integer: ");
    int a = 0;
    try {
      String s = bufread.readLine();
      Integer intVal = new Integer(s);
      a = intVal.intValue();
    } 
    catch(Exception ex) {
      ex.printStackTrace();
      return;
    }
    System.out.print("\n\nEnter the operation (+ - * /): ");
    int operation = 0;
    try {
      operation = System.in.read();
      System.in.skip(System.in.available());
    }
    catch(IOException ioex) {
      ioex.printStackTrace();
    }
    System.out.print("\n\nEnter another integer: ");
    int b = 0;
    try {
      String s = bufread.readLine();
      Integer intVal = new Integer(s);
      b = intVal.intValue();
    }
    catch(Exception ex) {
      ex.printStackTrace();
      return;
    }
    int result = 0;
    switch(operation) {
      case '+':
	  result = a + b;
	break;
      case '-':
	  result = a - b;
	break;
      case '*':
	  result = a * b;
	break;
      case '/':
	  if(b != 0) {
	    result = a/b;
	  }
	break;
      default:
	System.out.println("Not a valid operation...exiting!");
	return;
    }
    System.out.println("The result of " + a + " " + (char)operation + " " + b + " = " + result);
  }
}