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POCalculator solving three digits doesn't work properly
 

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  1. POCalculator solving three digits doesn't work properly
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    <p>So my calculator works perfectly with any calculations involving two digits including the C button however if i attempt any three digits calculations this doesnt really work for example 1 + 2 + 3 = 5 could someone tell me why is that and anyway i could fix it?</p> <pre><code>public class Calculator { private long currentInput; //current input private long previousInput; // previous input private long result; // result of calculation private String lastOperator = ""; // keeps track of the last operator entered /* New digit entered as integer value i - moves currentInput 1 decimal place to the left and adds i in "one's column" */ public void inDigit(long i) { currentInput = (currentInput * 10) + i; } /* Operator entered + - or * */ public void inOperator(String op) { previousInput = currentInput; // save the new input as previous to get ready for next input currentInput = 0; lastOperator = op; // remember which operator was entered } /* Equals operation sets result to previousInput + - or * currentInput (depending on lastOperator) */ public void inEquals() { if (lastOperator.equals("+")) { result = previousInput + currentInput; } else if (lastOperator.equals("-")) { result = previousInput - currentInput; } else if (lastOperator.equals("*")) { result = previousInput * currentInput; } lastOperator = ""; // reset last operator to "nothing" } /* Clear operation */ public void inClear() { currentInput = 0; previousInput = 0; result = 0; lastOperator = ""; } /* returns the current result */ public String getResult() { return Long.toString(result); //converts int to String } /* returns the previous input value */ public String getPreviousInput() { return Long.toString(previousInput); } /* returns the current input value */ public String getCurrentInput() { return Long.toString(currentInput); } </code></pre>
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