Mega Code Archive
Constructor with parameter value checking
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#include <iostream>
#include <iomanip>
#include <string.h>
#include <stdlib.h>
using namespace std;
class Book
{
public:
char *title;
char *author;
float price;
Book(char *title, char *author, char *publisher, float price);
void show_title(void) { cout << title << '\n'; };
float get_price(void) { return(price); };
void show_book(void)
{
show_title();
show_publisher();
};
void assign_publisher(char *name) { strcpy(publisher, name); };
private:
char *publisher;
void show_publisher(void) { cout << publisher << '\n'; };
};
Book::Book(char *title, char *author, char *publisher, float price)
{
if ((Book::title = new char[256]) == 0)
{
cerr << "Error allocating memory\n";
exit(0);
}
if ((Book::author = new char[64]) == 0)
{
cerr << "Error allocating memory\n";
exit(0);
}
if ((Book::publisher = new char[128]) == 0)
{
cerr << "Error allocating memory\n";
exit(0);
}
strcpy(Book::title, title);
strcpy(Book::author, author);
strcpy(Book::publisher, publisher);
Book::price = price;
}
int main(void)
{
Book tips("A", "B", "B",49.95);
Book diary("C", "D", "D", 9.95);
tips.show_book();
diary.show_book();
}
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