Example Program: Part 1

private: // private data

// the private real and imaginary components of the complex

float p_real, p_imaginary;

// the string (char *) representation of the complex, updated by print()

char *p_string;

public:

// Three different constructors:

// a constructor which takes no arguments; initializes complex to 0

complex() { p_string = NULL; p_real = 0.0; p_imaginary = 0.0; }

// a constructor which takes one argument: sets the real part, and

// makes the imaginary part 0

complex(float r) { p_string = NULL; p_real = r; p_imaginary = 0.0; }

// a constructor which takes two arguments: real and imaginary parts

complex(float r, float i) { p_string = NULL; p_real = r, p_imaginary = i; }

// destructor: deallocate memory for p_string if it was allocated

~complex() { if (p_string != NULL) delete[] p_string; }