Traversing file system according to a given root place by using threads by using C

[virtue]

Hi,

I wanna traverse inside the file system by using threads and processes.My program has to assume the first parameter is either given as "-p" which offers a multi-process application or "-t" which runs in a multi-threaded way. The second parameter is the pathname of a file or directory. If my program gets the path of a file, it should print out the size of the file in bytes. If my program gets the path of a directory, it should, in the same way, print out the directory name, then process all the entries in the directory except the directory itself and the parent directory. If my program is given a directory, it must display the entire hierarchy rooted at the specified directory. I wrote something but I got stuck in.I can not improve my code.Please help me.

My code is as following:
#include
#include
#include
#include
#include
#include
#include

int funcThread(DIR *D);

int main(int argc, char * argv[]) { pthread_t thread[100]; DIR *dirPointer; struct stat object_file; struct dirent *object_dir; int counter;

if(opendir(argv[1])==NULL)
{
printf("\n\nERROR !\n\n Please enter -p or -t \n\n");
return 0;
}

if((dirPointer=opendir(argv[1]))=="-t")
{
if ((object_dir = opendir(argv[2])) == NULL)
{
printf("\n\nERROR !\n\nPlease enter the third argument\n\n");
return 0;.
}
else
{
counter=0;
while ((object_dir = readdir(object_dir)) != NULL)
{
pthread_create(&thread[counter],NULL,funcThread,(void *) object_dir);
counter++;
}

}

}

return 0; }

int funcThread(DIR *dPtr) { DIR *ptr; struct stat oFile; struct dirent *oDir; int num;

if(ptr=readdir(dPtr)==NULL)
rewinddir(ptr);

if(S_ISDIR(oFile.st_mode))
{
ptr=readdir(dPtr);
printf("\t%s\n",ptr);
return funcThread(ptr);
}
else
{
while(ptr=readdir(dPtr)!=NULL)
{
printf("\n%s\n",oDir->d_name);
stat(oDir->d_name,&oFile);
printf("\n%f\n",oFile.st_size);
}
rewinddir(ptr);
}

}