Thread: file reading - ... - help!

I am doing windows programming, but I still mess around with console programs. I ALSO USE Dev-C++ 4.01! Anyhow, I am messing around with fstream. I can use ofstream to write 9 random numbers to a file on new lines, but I can't read it. Here's the code:


#include <iostream.h>
#include <stdlib.h>
#include <fstream.h>
#include <conio.c>
#include <time.h>

int main() {

int rnd = 0 ;
int nLine ;
char numx ;

cout << "Press any key..." ;
getch() ;

cout << "\n\n" ;

for(int x=0 ; x < 9 ; x++)
{
rnd=rand() % 9 ;

cout << "\nInputting " << rnd ;

ofstream numbers ("numList.lst", ios::app) ;
if( numbers.is_open() )
{
numbers << rnd << "\n" ;

numbers.close() ;
}
}

cout << "\n\n";

ifstream fin ("numList.lst");

while(! fin.eof() )
{
fin.getline(nLine, 10) ;

cout << numx ;
}

getch() ;

return 0 ;
}


When I try and use ifstream(fin) to read it, it outputs a bunch of numbers. How do I read it line-by-line and every time the file is a new line, put the new number on another line? ANY HELP IS APPRECIATED!

try this:

Code:

#include <iostream.h>
#include <stdlib.h>
#include <string.h>
#include <fstream.h>
#include <conio.h>
#include <time.h>

int main(void)
{
	int rnd = 0;

	// need a buffer to store the data, since you
	// are using int, you don't need a buffer any bigger than
	// 12 chars
	char input[12];

	ofstream numbers("numList.lst");
	
	if(numbers.is_open())
	{
		for(int x = 0; x < 9; x++)
		{
			rnd = rand() % 9;
			
			cout << "Inputting " << rnd << "\n";
			
			numbers << rnd << "\n" ;

		}

		numbers.close();
	}

	cout << "\n\n";

	ifstream fin("numList.lst");

	while(!fin.eof())
	{
		fin.getline(input, sizeof(input));

		if(strlen(input) > 0)
		{
			// output as string, then as a number
			cout << input << ", " << atoi(input) << "\n";
		}
	}

	fin.close();

	return(0);
}