Thread: Writing text data to a binary file with fsteam

fstream ifs;
ifs.open ("data.str", ios::binary | ios:ut);

char *data1 = "data1";
char *data2 = "data2";

ifs.write(data1, strlen(data1));
ifs.write(data2, strlen(data2));

when i this,data2 is not going under data1, i thought each write starts on a new line?

Just because it's a binary file doesn't mean you can't use the normal way of inserting strings:

Code:

fstream ifs;
ifs.open ("data.str", ios::binary | ios:ut);

char *data1 = "data1";
char *data2 = "data2";

ifs << data1 << endl;
ifs << data2 << endl;

ok that works fine, i know how to read from the file but i dont know how to read from select lines?
like if i want to access data2 at anytime with doing ifs >> data1 first

Originally Posted by Anddos

ok that works fine, i know how to read from the file but i dont know how to read from select lines?
like if i want to access data2 at anytime with doing ifs >> data1 first

Unless each line is exactly the same size, there is no way to find the beginning of line 2, without reading line 1 first. Any alternative you can come up with will be no less expensive than that.

Is there a reason you want to write to a binary file, though? Why not use a human readable file?