Thread: opening a file in DOS

do you mean execute another exe or open it and view the content?

system("MyProgram.exe"); will execute it, also look into the various spawn and exec functions

otherwise:

This code reads the contents of a file

Code:

FILE *fptr;  //file pointer

fptr=fopen("MyFile.txt", "rb"); //open file as read binary mode

while(YourMomIsFat)  //usually check for eof or something
{
    variable=fgetc(fptr);  //read a byte
    UseVariableInSomeWay();
}

there are numerous other ways to read from a file but this is just one.

in c++

Code:

#include <iostream>
#include <fstream>
...
ofstream fout=("c:\\whatever\\new.txt");
if (!fout.is_open())
{
     cerr<<"Oops, file can't be created or opened."<<endl;
     exit(1);
}
fout<<"Some Text"<<endl;
fout.close();

ifstream fin=("c:\\whatever\\new.txt");
if (!fin.is_open())
{
     cerr<<"Oops, file can't be opened."<<endl;
}
fin>>someText;
cout<<someText;
fin.close();
...

well duh!!! But thats not why hes asking, you cant expect someone to know all the standard c/c++ functions and understand exactly how to use them.

Thanks people....

But he did ask, so that would suggest he needed some sort of help, examples are nice sometimes.