How to read data from files in Turbo c++ 4.0?

问题

I am a beginner in programming and I am trying to make a code that reads 2 numbers from a file and then displays it in the output window on turbo c++. My code only reads the first number and produces incorrect output for the second number.

 #include<iostream.h>
 #include<fstream.h>
 #include<conio.h>

void main()
{
  int x, y;
  clrscr();
  ifstream inFile;
  ofstream outFile;
  inFile.open("prac.txt");

  while(!inFile.eof())
  inFile >> x >> y;
  cout << x << " " << y;

  inFile.close();

 }

The file contains the numbers: 2 3

Output : 2 0

Output when called as a function: 2 -28903 which is very different if I call it as a function compared when its in main which is what I was supposed to be doing I was just using it in main to see what happens.

Sorry, but our teacher wanted us to learn in Turbo c++ so I don't really have choice with the compiler.

回答1:

The std::cout should be inside the while loop:

while(!inFile.eof()){
     inFile >> x >> y;
     cout << x << " " << y;
}

回答2:

Try using infile>>x>>y inside the while loop condition like this

while(infile>>x>>y)

then use the cout statement in the loop.

来源：https://stackoverflow.com/questions/34489267/how-to-read-data-from-files-in-turbo-c-4-0