s1c2无法出现预期结果，求大佬帮忙看看问题在哪里

Aa6mo

#include <stdio.h>
#include <unistd.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>

#define MAX 256

long total;


int countLines(const char *filename);
int isCode(const char *filename);
void findAIIDirs(const char *path);

int countLines(const char *filename)
{
FILE *fp;
int count=0;
int temp;

if((fp=fopen(filename,"r"))==NULL);
   {
    fprintf(stderr,"Can not open the file:%s\n",filename);
    return 0;
      }
while((temp = fgetc(fp))!=EOF)

   {
     if (temp =='\n')
      {  
         count++;
          }
     }
fclose(fp);

return count;
}

int isCode(const char *filename)
{
int length;

length = strlen(filename);

if (!strcmp(filename + (length-2),".c"))
   {
    return 1;
    }
else
    {
      return 0;
     }
}
void findAIIDirs(const char *path)
{
   DIR *dp;
   struct dirent *entry;
   struct stat statbuf;

   if ((dp=opendir(path))==NULL)
    {
fprintf(stderr,"the path %s is wrong!\n",path);
return;
     }

chdir(path);
while((entry=readdir(dp))!=NULL)
{
lstat(entry->d_name,&statbuf);

if(!strcmp(".",entry->d_name) || !strcmp("..",entry->d_name))
    continue;
if(S_ISDIR(statbuf.st_mode))
    {
     findAIIDirs(entry->d_name);
      }
else
    {
    if (isCode(entry->d_name))
      {
        total+=countLines(entry->d_name);
         }
     }
}
chdir("..");
closedir(dp);

}

int main()
{
char path[MAX]=".";
printf("计算中...\n");
findAIIDirs(path);
printf("目前你总共写了%ld 行代码\n\n",total);
return 0;
}