对每个命令行参数打印文件类型

#include <stdio.h> //for printf

#include <stdlib.h> //for exit

#include <sys/stat.h> //for S_ISREG()/S_ISDIR() and so on


int main(int argc,char *argv[])
{
    char *ptr;
    struct stat buf;
    int i;
    
    for(i=1; i<argc; i++)
    {
        printf("argv[%d]:%s: ",i,argv[i]);    

        if(lstat(argv[i],&buf) < 0)
        {
            perror("lstat error");
            continue;    
        }
        if(S_ISREG(buf.st_mode))
         ptr = "regular";
        else if(S_ISDIR(buf.st_mode))
         ptr = "directory";
        else if(S_ISCHR(buf.st_mode))
         ptr = "character special";
        else if(S_ISBLK(buf.st_mode))
         ptr = "block special";
        else if(S_ISFIFO(buf.st_mode))
         ptr = "fifo";
        else if(S_ISLNK(buf.st_mode))
         ptr = "symbolic link";
        else if(S_ISSOCK(buf.st_mode))
         ptr = "socket";
        else
            ptr = "***unknown mode***";
        
        printf("%s\n",ptr);
    }
    exit(0);
}