58 lines
1.6 KiB
Java
58 lines
1.6 KiB
Java
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/*
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* Build class called Calculator that emulates basic functions of a calc
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* add sub mult div and clear
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* one private member field, double value, for the calcs current val
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*
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* public Calculator() - set field to 0.0
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* public void add(double val) - add to field
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* public void subtract(double val) - remove from field
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* public void multiply(double val) - multiply field
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* public void divide(double val) - divide field
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* public void clear() - set to 0.0
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* public double getValue() - return field
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*
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* Given two double input values num1 and num 2, outputs following values:
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*
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* 1. Inital value of field value
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* 2. value after adding num1
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* 3. value after mult by 3
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* 4. value after sub num2
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* 5. value after dividing by 2
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* 6. value after calling clear
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*
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* sample:
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* input: 10.0 5.0
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* output:
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* 0.0
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* 10.0
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* 30.0
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* 25.0
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* 12.5
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* 0.0
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*/
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/* Comments
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* It's interesting. A long long time ago, when I was still barely able
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* to make QBASIC beep and take inkey$ I thought a calculator woul be
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* the perfect project to begin programming, and it gave me grief
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* though now, it's easy.
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* To be fair though, I don't think I even had a grasp of functions at the time
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*/
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public class Calculator{
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private double value;
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public Calculator(){
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this.value = 0;
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}
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public void add(double val){ this.value += val; }
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public void subtract(double val){ this.value -=val; }
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public void multiply(double val){ this.value *=val; }
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public void divide(double val){ this.value /=val; }
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public void clear(){ this.value = 0; }
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public double getValue(){ return this.value; }
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}
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