From d987a211ff8bb0d7341bf0dddf748d8493446434 Mon Sep 17 00:00:00 2001 From: krolxon Date: Sat, 17 Feb 2024 16:26:02 +0530 Subject: add python like cli interface --- Calculator.java | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-) (limited to 'Calculator.java') diff --git a/Calculator.java b/Calculator.java index 7070c87..c43ca9f 100644 --- a/Calculator.java +++ b/Calculator.java @@ -1,14 +1,30 @@ +import java.util.Scanner; + public class Calculator { public static void main(String[] args) { - GFrame frame = new GFrame("Calculator"); - String expr = "(84 / 4 * 3 - 9) * 2 + 1 / 5"; // 108.2 + // String expr = "(84 / 4 * 3 - 9) * 2 + 1 / 5"; // 108.2 + String expr = new String(" "); + Scanner sc = new Scanner(System.in); Parser p; + if (args.length == 0) { - p = new Parser(expr); + new GFrame("Calculator"); } else { - p = new Parser(args[0]); + if (args[0].equals("-n")) { + System.out.println("Type \"exit\" or Ctrl+C to exit."); + while (true) { + System.out.print(">>> "); + expr = sc.nextLine(); + if (!expr.equals("exit")) { + p = new Parser(expr); + System.out.println(p.eval()); + } else { + sc.close(); + break; + } + } + } else { + } } - System.out.println("postfix => \t " + p.getPostfix()); - System.out.println(p.eval()); } } -- cgit v1.2.3