Work20230504

作业一

//作业一
//所用函数有
//opendir readdir closdir
#include <sys/types.h>
#include <dirent.h>
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
int main(){//打开目录DIR *dirStr=opendir("../program_DS/");if(dirStr==NULL){printf("目录打开失败\n");return -1;}//获取目录内的内容struct dirent *det;int count=1;char *name[256];while(1){det=readdir(dirStr);if(NULL==det){if(0==errno){printf("目录文件读取完毕\n");break;}else{perror("readdir");return -1;}}//检测到隐藏文件夹则不打印if(det->d_name[0]!='.'){name[count]=det->d_name;printf("[%d] %s\n",count++,det->d_name);}}
//将文件内容显示在终端上
//利用文件IO中的write函数,将文件写到终端上printf("选择要打开的文件标号:");int lable;scanf("%d",&lable);
//1.利用open函数打开文件int flable =open(name[lable],O_RDONLY);if(flable==-1){perror("error");}ssize_t res=0;char buf[32]="";while(1){bzero(buf,sizeof(buf));res=read(flable,buf,sizeof(buf));//2.读取if(0==res) break;write(1,buf,res);//3.打印到终端}close(flable);closedir(dirStr);return 0;
}

作业二

//作业二
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <time.h>
#include <stdlib.h>
char *permissionInfo(mode_t mode){static char getPer[10]="";char per[]="rwx";for(int i=0;i<9;i++){if((mode&(0400>>i)==0)){getPer[i]='-';continue;}getPer[i]=per[i%3];}return getPer;}
int main(){struct tm *info=NULL;struct stat buf;if(stat("./pro.c",&buf)<0){perror("stat");return -1;}// printf("mode:%o\n",buf.st_mode);printf("%s",permissionInfo(buf.st_mode));putchar(10);printf("link:%ld\n",buf.st_nlink);printf("uid:%d gid:%d\n",buf.st_uid,buf.st_gid);printf("size:%ld\n",buf.st_size);//printf("time:%ld\n",buf.st_ctime);info=localtime(&buf.st_ctime);if(info==NULL) printf("获取失败");printf("%d",info->tm_year+1900);printf("-%02d",info->tm_mon+1);printf("-%02d",info->tm_mday);printf(" %02d",info->tm_hour);printf(":%02d",info->tm_min);printf(":%02d",info->tm_sec);putchar(10);return 0;
}

运行结果:

Work20230504

Work20230504相关推荐

最新文章

热门文章