Countline program, written by C

Countline

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <dirent.h>  /*some functions option on dir*/
#include <sys/stat.h>


#define MAXLINE 200

int linecount=0; /*for save the countline*/

int getLine(char *fname)
{
	FILE *fp;
	char line[MAXLINE];
	int  total = 0;
	
	fp = fopen(fname,"r");

	while(fgets(line,200,fp) != NULL)
		total++;

	return total;
}

/*Recurse a the target dirent*/
void Recur_dir(const char *dir, int depth)
{
	DIR *dp;  /*dir pointer*/
	struct dirent *entry;  /*structure to save dir info*/
	struct stat statbuf; /*use to charge which is dir and which is file*/

	/*get the decriptor*/
	if((dp = opendir(dir)) == NULL)
	{
		printf("cannot open directory:%s\n",dir);
		fprintf(stderr,"opendir error:%s\n",strerror(errno));
		exit(1);
	}
	
	chdir(dir); /*enter into target dir*/
	while((entry = readdir(dp)) != NULL)
	{
		lstat(entry->d_name,&statbuf);/*get the entry status*/
		if(S_ISDIR(statbuf.st_mode))
		{
			/*is a dirctory and ignore the .. and .*/
			if(strcmp(".",entry->d_name)== 0 || strcmp("..",entry->d_name) == 0)
				continue;
			//printf("%*s%s\n",depth,"",entry->d_name);
			Recur_dir(entry->d_name,depth+4); /*continue to open */
		}
		else /*if not a dirctroy and we count the line*/
		{	
			linecount += getLine(entry->d_name); /*count everyfile line*/
		}
	}

	chdir("..");
	closedir(dp);
}


int main(int argc, const char *argv[])
{
	if(argc != 2)
	{
		printf("Usage:%s dir\n",argv[0]);
		exit(1);
	}

	Recur_dir(argv[1],0);
	printf("Total:%d\n",linecount);
	return 0;
}