Programming

I was reading Advanced Programming in the Unix Environment and it says to use ioctl() to get the terminal's width and height. I wrote this program:

Code:

// print width and height

#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <termios.h>

int main( int argc, char **argv ){
	struct winsize size;
	ioctl( 0, TIOCSWINSZ, (char *) &size );
	printf( "Rows: %u\nCols: %u\n", size.ws_row, size.ws_col );
	return 0;
}

When I ran it, the numbers it outputted were in the thousands, and when I started Vim up again, the terminal got overloaded. Everything turned into static and the activity monitor showed Vim occupying 1 GB of memory. Is there a way to get the right terminal dimensions and avoid this problem?

---------- Post updated at 12:23 PM ---------- Previous update was at 11:46 AM ----------

Never mind. Fixed the problem.

How was the problem fixed, for the benefit of future struggling googlers?

I changed TIOCSWINSZ to TIOCGWINSZ. When you use an S, it sets the terminal dimensions, and when you use a G, it gets the dimensions.

My problem was that I set the terminal dimensions to fields in an uninitialized structure, which caused my terminal program to overload as it tried to make an arbitrarily large window.

Thank you for telling us the solution.