《APUE》習題16.2

#include<iostream>
#include<sys/stat.h>
#include<sys/socket.h>
#include<my_error.h>

using namespace std;

int main(){

        int fd; 

        struct stat stat;
        if((fd=socket(AF_INET,SOCK_DGRAM,0))<0)
                err_sys("socket error");

        if((fstat(fd,&stat))<0)
                err_sys("fstat error");

        cout<<"st_mode="<<stat.st_mode<<endl<<
                "st_ino="<<stat.st_ino<<endl<<
                "st_size="<<stat.st_size<<endl<<
                "st_blocks="<<stat.st_blocks<<endl;
        return 0;
}
           

輸出：

st_mode=49663

st_ino=83937

st_size=0

st_blocks=0