C 语言 ioctl

/*

*@author cody

*@date 2014-08-12

*@description 

*/

/*

#include <sys/ioctl.h>



send control and config order to device



int ioctl(int d,int request,...);

params

    d -- file descriptor

    request ---ioctl order



*/

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <sys/ioctl.h>

void GetTernimalSize(){



    struct winsize size;

    if(isatty(STDOUT_FILENO) == 0){

        exit(1);

    }

    if(ioctl(STDOUT_FILENO,TIOCGWINSZ,&size) < 0){

        perror("ioctl error");

        exit(1);

    }



    printf("%d rows,%d columns\n",size.ws_row,size.ws_col );

}





int main(int argc, char const *argv[])

{

    GetTernimalSize();

    return 0;

}