title: In the context of file-handling in C++ console application; max characters displayability without horizontal scrolling?
body: <p>My professor today was teaching us File handling in C++. He made a very simple program which would read two lines from a text file and display those on the screen using fin.getline() function. He chose the size of the array which was storing the read line to be of 80 characters. He then proceeded to explain that it MUST be taken as 80 because one line "on the screen" consists of 80 characters.</p>
  
  <p>I couldn't really understand what he was saying. The amount of characters appearing on the screen, isn't that screen/font/resolution dependent?</p>
  
  <p>Even in compilers as old as Borland and Turbo C++, wasn't there a way to change how many characters would display on the screen when say (assuming wrapping is on) ?</p>
  
  <p>I couldn't get his concept of hard and fast "80 characters". Please explain? </p>