Write a simple \"calculator\" parser in java. Don\'t make this complicated. You

ID: 3877536 • Letter: W

Question

Write a simple "calculator" parser in java. Don't make this complicated. You will have input of the form:

number (operator number) (operator number) (operator number)...

where a number is just a string of digits (don't worry about signs, floating point numbers, scientific notation...)

and operator is one of +,-,*,/

Find each of the above tokens and identify it as a number or operator

For example, the input:

5 + 3 * 2

should output:

5 number

+ operator

3 number

* operator

2 number

You may assume that each token has at least one space between it and the next token

If you hit an error character you can either ignore it or terminate your program

Hand in your java source code.

import java.util.Scanner;

public class Calculator {

public static void main(String[] args) {

String input;

Scanner sc=new Scanner(System.in);

System.out.println("Enter the string to parse");

input=sc.nextLine();

input=input.replace(" ","");

char[] tokens=input.toCharArray();

for(char token :tokens)

{

if(Character.isDigit(token))

{

System.out.println(token+" number");

}

else

System.out.println(token+" operator");

}

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