Constructor calling problem

[priyanshm]

// Program to calculate fine using class.

#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>

class library
{
long bookid;
char bookname[25];
int fine;
int no_of_days;
	float calculate()
	{
	float tot_fine;
		if((fine*no_of_days)<2000)
		{
		tot_fine=fine*no_of_days;
		}
		else if((fine*no_of_days)>=2000)
		{
		tot_fine=1.05*fine*no_of_days;
		}
	return tot_fine;
	}
public:
	library()
	{
	bookid=0;
	strcpy(bookname,"Not defined");
	fine=0;
	no_of_days=0;
	}
        library(int num,char bname)
	{
	bookid=num;
	strcpy(bookname,bname");
	fine=0;
	no_of_days=0;
	}
	void getdata()
	{
	cout<<"Enter book ID: ";
	cin>>bookid;
	cout<<"Enter book name: ";
	gets(bookname);
	cout<<"Enter fine per day: ";
	cin>>fine;
	cout<<"Enter number of days: ";
	cin>>no_of_days;
	}
	void showdata()
	{
	cout<<"\nBook ID: "<<bookid;
	cout<<"\nBook name: "<<bookname;
	cout<<"\nFine per day: "<<fine;
	cout<<"\nNumber of days: "<<no_of_days;
	cout<<"\nTotal fine: "<<calculate()<<"\n\n";
	}
}; 

In the above program, how do I call the diff. constructors in main?

Thanks in advance.

[maeriden]

The constructor will be automatically selected depending on the arguments you pass during object construction.

[priyanshm]

But how to do that?? Can you please write that part of the code?

[AbstractionAnon]

int main ()
{ library l1;  // calls default constructor 
   library l2 (1,'A');  // Calls explicit constructor
}

A couple of comments:
Line 35, you probably want bname to be a string or a character array, not a single character as you have it.

Line 38, you have an extraneous ".

[priyanshm]

thanks for the help

and so to call the functions using these constructors, can i do the following:

l1.showdata();
l2.showdata();

[maeriden]

Sure.