Thread: File I/o

Dear Friends,

I have written the code below in an effort of laerning File I/O and port programming. I am coding using the VC++ 6.0 compiler. The code runs well. Pliz someone help me modify the code so that the program output is captured and saved to a file. The program is to prompt a user for a filename.

My code is:

Code:

/* program to read and write to and from the printer port.*/
/* the three port registers are used*/

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

#define DATA	 0x378  /*Data Register base address*/
#define STATUS   DATA+1 /* Status Register address*/
#define CONTROL  DATA+2  /*Control Register address*/


using namespace std;

int main() 
{

//prepare for processing text
	bool MoreLinesToProcess=true;
	
		while (MoreLinesToProcess){
		//process next line
		bool MoreCharactersOnCurrentLine=true;

		cout<<"please type a line of text:"<<endl;

		while (MoreCharactersOnCurrentLine){

		/*process next character on current line*/
			char s,n;  //CurrentCharacter;
			if (cin.get(s)){
		/*process current character on current line*/
				if(s=='\n')
		/*found newline character that ends line*/
					MoreCharactersOnCurrentLine=false;
				else  {
					
_outp(CONTROL,_inp(CONTROL)&0xF0|0x04); /*initialise 				the CONTROL port for data input*/

_outp(DATA, s);   /*write c to the DATA register*/

	clock_t start_time;
					start_time=clock();
while ((clock()-start_time)<0.25*CLK_TCK);/*propagation 					delay time*/

	n=(_inp(STATUS)&0xF0);  /* read MSnibble*/

	n=n|(_inp(CONTROL)&0x0F);/*Read LSnibble*/

					n=n^0x84; /*toggle bit 2 and 7 */STROBE pin is     hardware inverted.*/
					
					
	cout<<n;
	}
            }
         }

       }
      cout<<"I am doing fine";

return 0;
}