Linux下C遍历单个目录

一个C文件：listdir.c，一个Makefile文件.

//file: listdir.c

#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>


#ifdef __cplusplus
extern "C" {
#endif

#define MAX_PATH_LEN 256

int main(void)
{

char path[MAX_PATH_LEN] = {0};

DIR *dir = NULL;

struct dirent *ptr = NULL;

printf("Please input the path:");

scanf("%s", path);

if( NULL == (dir = opendir(path)) )

{

switch(errno)

{

case EACCES:

{

printf("No premium to access %s ...\n", path);

/*Add code here*/

}

break;

case ENFILE:

{

printf("Up to the number of system can open ...\n");

/*Add code here*/

}

break;

case EMFILE:

{

printf("Up to the number of process can open ...\n");

/*Add code here*/

}

break;

case ENOTDIR:

{

printf("%s is not a real dir ...\n", path);

/*Add code here*/

}

break;

case ENOENT:

{

printf("%s not exist ...\n", path);

/*Add code here*/

}

break;

default :

{

printf("Error undefined ...");

}

break;

}

goto exit_dir;

}

while( NULL != (ptr = readdir(dir)) )

{

/*file:8, dir:4*/

switch(ptr->d_type)

{

case 8:

{

printf("File:%s\n", ptr->d_name);

}

break;

case 4:

{

printf("Dir:%s\n", ptr->d_name);

}

break;

default :

{

printf("Neither a file nor a dir ...");

}

break;

}

}

closedir(dir);

return 0;

exit_dir:

closedir(dir);

return -1;

}


#ifdef __cplusplus
};
#endif

//file: Makefile

listdir : listdir.o 

gcc -o listdir listdir.o

listdir.o : listdir.c

gcc -g -Wall -c listdir.c

clean:

rm -rf listdir.o listdir

使用方法：make后运行listdir，程序提示输入要遍历的路径，输入路径后回车就可以。