Hi, I'm trying to make a simple calculator with order of operations.

I had read in the Internet and found the algorithm of RPN (Reverse Polish notation).

Lets take an example:

2 * 5 - 3 + 4

EDIT:

Ok, I did as you both said check it out now:

Proc is string array of both numbers and operations. Proc will be {2, *, 5, -, 3, +, 4}

This is the code:

How can I make it work as well?EDIT: Lets take an example: 2 * 5 - 3 + 4 Ok, I did as you both said check it out now: Proc is string array of both numbers and operations. Proc will be {2, *, 5, -, 3, +, 4} This is the code: int tempt = 0; Stack <Double> stc = new Stack <Double>(); while (tempt < proc.length) { try { Double num = Double.parseDouble(proc[tempt]); stc.push(num); tempt++; } catch (Exception e) { char [] stcs = proc[tempt].toCharArray(); switch (stcs[0]) { case '+': { double a2 = stc.pop(); double a1 = stc.pop(); stc.push(a1 + a2); tempt++; break; } case '-': { double a2 = stc.pop(); double a1 = stc.pop(); stc.push(a1 - a2); tempt++; break; } case 'x': { double a2 = stc.pop(); double a1 = stc.pop(); stc.push(a1 * a2); tempt++; break; } case '÷': { double a2 = stc.pop(); double a1 = stc.pop(); stc.push(a1 / a2); tempt++; break; } } }

HELP ME PLS!