2d tile map saver/loader

[lordseanington]

I am creating a 2d tile map game currently and I am trying to find a moderate way of saving and loading it through a text file and fstream.h. I am doing the saving by integers as well. What is difficult for me to understand is how integers save and load. Per line perhaps? I am just not sure about this.
Thank you

[Duthomhas]

As long as you can tell where an integer begins and ends it doesn't matter. I recommend you write-up an example of what you'd like your file to look like and make your code read and write that.

[lordseanington]

How would I tell where an integer begins. I would not mind having an integer a line but I am using
My file>>integer; and i am not sure how it reads I.e. by line, separated by spaces, or some other way

[Duthomhas]

The extraction operator successfully terminates (by default) on any whitespace or EOF.
It terminates with error if something went wrong.

For example, suppose your file had the following data:

3 
7 twelve 
94

You could read the first two integers with an:

int a, b, c;
f >> a >> b;
if (f) cout << "file is good.\n";

But if you try to read the next thing as an integer it will fail.

int c;
f >> c;
if (!f) cout << "file is bad.\";  

But, if you were to have read it as a string, it would have worked:

string c;
f >> c;
if (f) cout << "file is still good.\n";

And now you can get that last integer as usual:

int d;
f >> d;

Placement of newlines means nothing if you are just using the input extraction operators.

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