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Help sorting books in alpha. order - c++

elementx2z (9)
Hey guys, can you help me out with this program I'm writing. I'm supposed to type in a specific data of books (which I have as a txt file and I redirect). The program is supposed to sort the books by price and alphabetical order. I got it down with price, but I can't seem to figure out how to do it in alphabetical order. I looked it up, but there's a few different methods to do it, and I'm completely confused with them. Here's my code so far.

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#include <iostream>
using namespace std;

struct Books
{
char Title[128];
char Author[256];
float price;

};
Books BookInfo()
{
Books temp;
cout << "Enter the following information for a Book:" << endl;
cout << "Title: ";
cin.getline( temp.Title, 128 );
cout << "Author: ";
cin.getline( temp.Author, 256 );
cout << "Price: ";
cin >> temp.price;
cin.get(); // get rid of the newline character
return temp;	
}




void SortMyBook( Books Byprices[], int num )
{
int i, j;

for( i= 0; i < num - 1; i++ )
{
for( j= i+1; j < num; j++ )

{
Books temp= Byprices[i];
Byprices[i]= Byprices[j];
Byprices[j]= temp;
}
}
}



void OutputGames( Books Libro[], int num )
{
cout << endl;
for( int i= 0; i < num; i++ )
{
cout << "The output of the book list sorted by price :" << endl;
cout << "Title: " << Libro[i].Title << endl;
cout << "Author: " << Libro[i].Author << endl;
cout << "Price: " << Libro[i].price << endl;
cout << endl;
}
}

const int NUMBER= 5;
int main()
{

Books Libro[NUMBER];

for( int i= 0; i < NUMBER; i++ )

	
Libro[i]= BookInfo();

SortMyBook( Libro, NUMBER );

OutputGames( Libro, NUMBER );
system("pause");
}
Last edited on
frantzdyromain91 (7)
Heres a hint: compare the Char arrays ;)
bluecoder (763)
How can you sort with the price and with the alphabitcal order .. i am little confused .
bluecoder (763)
but you can compare like this . 

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void SortMyBookWithPrice( Books Byprices[], int num )
{
	int i, j;
	for( i= 0; i < num - 1; i++ )
	{
		if( Byprice[i].price < Byprice[i + 1].price ) 
		{
	
			Books temp= Byprices[i];
			Byprices[i]= Byprices[i + 1];
			Byprices[i + 1]= temp;
		}		
	}
}


void SortMyBookWithTitle( Books Byprices[], int num )
{
	int i, j;
	for( i= 0; i < num - 1; i++ )
	{
		if( Byprice[i].Title[i] < Byprice[i + 1].Title[i+1] ) 
		{
	
			Books temp= Byprices[i];
			Byprices[i]= Byprices[i + 1];
			Byprices[i + 1]= temp;
		}		
	}
}
helios (17562)
frantzdyromain91: char arrays can't be compared (directly).

bluecoder: That doesn't work. In more ways than one.

http://www.cplusplus.com/reference/clibrary/cstring/strcmp/
Although I would suggest using std::string instead.
elementx2z (9)
sorry for the confusion, it would output a list of the books sorted out by price, and a list sorted out in alphabetical order (by the name of the book). The way it's sorted about by price right now is from least to greatest
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