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; }



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