How to move a file from one folder to another with its filename?

#include<stdio.h>
 #include<unistd.h>
 #include<string.h>    
 #include<stdlib.h>
 #include<sys/ioctl.h>
 #include<sys/types.h>
 #include<arpa/inet.h>
 #include<sys/socket.h>
int receive_text(long long int socket)
{ 
	long int buffersize = 0, recv_size = 0, size = 0, read_size, write_size; 
	char verify = '1',c; 
	int errno;
	FILE *text;
	char *pch;
	char *str="/home/sosdt009/Documents";
	char *fname[2];
	char *filename[10];
	char *filebody[1024];
  	int i=0;
 
	//Find the size of the text
	recv(socket, (char *)&size, sizeof(int), 0);
 	printf("Size value is:%ld\n",size);
	//Send our verification signal
	send(socket, &verify, sizeof(char), 0);
 	printf("Size value is:%ld\n",size);
	//Make sure that the size is bigger than 0
	if (size <= 0)
	{
		printf("Error has occurred. Size less than or equal to 0 \n");
		return -1;
	} 
	
	/*if (text == NULL)
	{
		printf("Error has occurred, file could not be opened \n");
		return -1;
	}*/
			 
	//Loop while we have not received the entire file yet

	while (recv_size < size)
	{
		ioctl(socket, FIONREAD, &buffersize);
 
		//We check to see if there is data to be read from the socket 
		if (buffersize > 0)
		{
			char *pBuf = malloc(buffersize);
			printf("Buffer value is:%s\n",pBuf);
			if (!pBuf)
			{
				fprintf(stderr, "Memory Error. Cannot allocate!\n");
				exit(-1);
			} 
			read_size = recv(socket, pBuf, buffersize, 0);
			printf("read size is:%ld\n",read_size);
			if (read_size  < 0)
			{
				printf("%s", strerror(errno));
			}
			//printf ("Splitting string \"%s\" into tokens:\n");
  			pch = strtok (pBuf,"@");
			printf(" value is:%s\n",pch);
  			while (pch != NULL)
  			{
				filename[i]=pch;
				strcpy(str,filename[i]);
				printf("the string copy is: %s\n",str);
				text = fopen(str, "w"); 
    				/*printf ("filename=%s\n",filename[i]);
 				pch = strtok (NULL, "@");*/
				i++;
				filebody[i]=pch;
    				printf ("filebody=%s\n",filebody[i]);
 				pch = strtok (NULL, "@");
				while ((filebody[i] = strtok(NULL, "@")) != NULL)
				printf("Next: %s\n",filebody[1024]);
				//strcpy(filename[i],"filename");
				//strcpy(filebody[i],pBuf);
				//strcat(filename[i],filebody[i]);
				pBuf=filename[i];
  			}		
 
			//Write the currently read data into our text file
			write_size = fwrite(pBuf, 1, buffersize, text); 
			free(pBuf);
 
			//Increment the total number of bytes read
			recv_size += read_size;
		}
	} 
	fclose(text);
	printf("File successfully Received! \n");
	return 1;
}
int main(int argc , char *argv[])
{
      long long int socket_desc , new_socket, c, read_size, buffer = 0;
      struct sockaddr_in server , client;
      char *readin;

      //Create socket

      socket_desc = socket(AF_INET , SOCK_STREAM , 0);
      if (socket_desc == -1)
      {
         printf("Could not create socket");
      }

      //Prepare the sockaddr_in structure

      server.sin_family = AF_INET;
      server.sin_addr.s_addr = INADDR_ANY;
      server.sin_port = htons( 6777 );

      //Bind

     if( bind(socket_desc,(struct sockaddr *)&server ,sizeof(server)) < 0)
     {
       puts("bind failed");
       return 1;
     }
     puts("Bind completed");

     //Listen

     listen(socket_desc,3);

      //Accept and incoming connection

      puts("Waiting for incoming connections...");
      c = sizeof(struct sockaddr_in);
      if((new_socket = accept(socket_desc,(struct sockaddr *)&client,(socklen_t *)&c)))
      {
		puts("Connection accepted");
      }
      fflush(stdout);
      if (new_socket<0)    
      {
      	perror("Accept Failed");
      	return 1;
      }
    	receive_text(new_socket);
    	close(socket_desc);
    	fflush(stdout);
    	return 0;
}