我一直在寻找一种从我的C程序中获得终端宽度的方法.我一直在想的是:
#include <sys/ioctl.h>
#include <stdio.h>
int main (void)
{
struct ttysize ts;
ioctl(0, TIOCGSIZE, &ts);
printf ("lines %d\n", ts.ts_lines);
printf ("columns %d\n", ts.ts_cols);
}
但每次我试着
austin@:~$ gcc test.c -o test
test.c: In function ‘main’:
test.c:6: error: storage size of ‘ts’ isn’t known
test.c:7: error: ‘TIOCGSIZE’ undeclared (first use in this function)
test.c:7: error: (Each undeclared identifier is reported only once
test.c:7: error: for each function it appears in.)
这是最好的方法,还是有更好的方法?如果没有,我如何才能让它工作?
编辑:固定代码为
#include <sys/ioctl.h>
#include <stdio.h>
int main (void)
{
struct winsize w;
ioctl(0, TIOCGWINSZ, &w);
printf ("lines %d\n", w.ws_row);
printf ("columns %d\n", w.ws_col);
return 0;
}