42 lines
1.5 KiB
C++
42 lines
1.5 KiB
C++
// studenti.h -- defining a Student class using private inheritance
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#ifndef STUDENTC_H_
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#define STUDENTC_H_
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#include <iostream>
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#include <valarray>
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#include <string>
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class Student : private std::string, private std::valarray<double>
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{
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private:
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typedef std::valarray<double> ArrayDb;
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// private method for scores output
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std::ostream & arr_out(std::ostream & os) const;
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public:
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Student() : std::string("Null Student"), ArrayDb() {}
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explicit Student(const std::string & s)
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: std::string(s), ArrayDb() {}
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explicit Student(int n) : std::string("Nully"), ArrayDb(n) {}
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Student(const std::string & s, int n)
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: std::string(s), ArrayDb(n) {}
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Student(const std::string & s, const ArrayDb & a)
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: std::string(s), ArrayDb(a) {}
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Student(const char * str, const double * pd, int n)
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: std::string(str), ArrayDb(pd, n) {}
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~Student() {}
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double Average() const;
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double & operator[](int i);
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double operator[](int i) const;
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const std::string & Name() const;
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// friends
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// input
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friend std::istream & operator>>(std::istream & is,
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Student & stu); // 1 word
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friend std::istream & getline(std::istream & is,
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Student & stu); // 1 line
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// output
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friend std::ostream & operator<<(std::ostream & os,
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const Student & stu);
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};
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#endif
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