--- /dev/null
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main (int argc, char **argv)
+{
+ struct winsize w;
+ ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+
+ printf ("lines %d\n", w.ws_row);
+ printf ("columns %d\n", w.ws_col);
+ return 0; // make sure your main returns int
+}
+