Introduction to C++ and C Programming by Hans Petter Langtangen

Author:Hans Petter Langtangen [Langtangen, Hans Petter]
Language: eng
Format: azw3
Publisher: Ayesha Naveed
Published: 2017-11-27T05:00:00+00:00

MyVector ClassMyVector holds both the data in the vector, the length

of the vector, as well as a set of functions for operating on the vector data

MyVector objects can be sent to Fortran/C functions:

// v is MyVector

call_my_F77_function (v.getPtr(), v.size(), ...)

// array length

The MyVector class

class MyVector

{private: double* A;

int length;

void allocate (int n);

void deallocate();public: MyVector ();

MyVector (int n);

MyVector (const MyVector& w); // MyVector v(w);

~MyVector (); // clean up dynamic memory bool redim (int n); // v.redim(m); MyVector& operator= (const MyVector& w);// v = w; double operator() (int i) const; // a = v(i); double& operator() (int i); // v(i) = a;

void print (std::ostream& o) const; // v.print(cout); double inner (const MyVector& w) const; // a = v.inner(w); int size () const { return length; } // n = v.size(); double* getPtr () { return A; } // send v.getPtr() to C/F77

};

// vector entries (C-array)

// allocate memory, length=n // free memory

// MyVector v;

// MyVector v(n);

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