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27.9.3: C++ Examples

  • Page ID
    103078
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \)

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    \(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)

    Objects

    // This class converts temperature between Celsius and Fahrenheit.
    // It may be used by assigning a value to either Celsius or Fahrenheit 
    // and then retrieving the other value, or by calling the ToCelsius or
    // ToFahrenheit methods directly.
    //
    // References:
    //     https://www.mathsisfun.com/temperature-conversion.html
    //     https://en.wikibooks.org/wiki/C%2B%2B_Programming
    
    #include <iostream>
    
    using namespace std;
    
    class Temperature {
        public:
            double getCelsius(void);
            void setCelsius(double value);
            double getFahrenheit(void);
            void setFahrenheit(double value);
            double toCelsius(double fahrenheit);
            double toFahrenheit(double celsius);
        
        private:
            double celsius;
            double fahrenheit;
    };
    
    double Temperature::getCelsius(void) {
        return celsius;
    }
    
    void Temperature::setCelsius(double value) {
        celsius = value;
        fahrenheit = toFahrenheit(celsius);
    }
    
    double Temperature::getFahrenheit(void) {
        return fahrenheit;
    }
    
    void Temperature::setFahrenheit(double value) {
        fahrenheit = value;
        celsius = toCelsius(fahrenheit);
    }
        
    double Temperature::toCelsius(double fahrenheit) {
        return (fahrenheit - 32) * 5 / 9;
    }
    
    double Temperature::toFahrenheit(double celsius) {
        return celsius * 9 / 5 + 32;
    }
    
    // This program creates instances of the Temperature class to convert Celsius 
    // and Fahrenheit temperatures.
    //
    // References:
    //     https://www.mathsisfun.com/temperature-conversion.html
    //     https://en.wikibooks.org/wiki/C%2B%2B_Programming
    
    int main() {
        Temperature temp1;
        temp1.setCelsius(100.0);
        cout << "temp1.celsius = " << temp1.getCelsius() << endl;
        cout << "temp1.fahrenheit = " << temp1.getFahrenheit() << endl;
        cout << endl;
        
        Temperature temp2;
        temp2.setFahrenheit(100.0);
        cout << "temp2.fahrenheit = " << temp2.getFahrenheit() << endl;
        cout << "temp2.celsius = " << temp2.getCelsius() << endl;
    }
    

    Output

    temp1.celsius = 100
    temp1.fahrenheit = 212
    
    temp2.fahrenheit = 100
    temp2.celsius = 37.7778
    

    References

    • Wikiversity: Computer Programming

    27.9.3: C++ Examples is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts.

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