1.使用readdir来将目录中的链接文件显示出来

2.写入到一个文件内部

3.将文件中的内容显示到屏幕

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>int main(int argc, const char *argv[])
{DIR *dp;struct dirent *dt;int FileNum = 0 ;FILE *fp_out = NULL;char ch ;fp_out = fopen(argv[2],"w+");if(fp_out == NULL){perror("Fail to fp_out");}dp = opendir(argv[1]);if(dp == NULL){perror("Fail to opendir");return -1;}while(1){dt = readdir(dp);if(dt == NULL){break;}if(dt->d_type == DT_LNK ){fprintf(fp_out,"%s \n",dt->d_name);FileNum++;printf("第%d个链接文件： %s\n",FileNum,dt->d_name);}}fseek(fp_out,0,SEEK_SET);while(fscanf(fp_out,"%c",&ch) != EOF){printf("%c",ch);ch = 0;}fclose(fp_out);if(closedir(dp) < 0){perror("Fail to closedir");return -1;}printf("总文件个数： %d\n",FileNum);return 0;
}