//you can create 50 txt file in your desk.and than random chooes them 
	int i;
    int randomFileNum = 50;
	for(i = 0;i<randomFileNum;i++)
	{
		int a =  (int)random(randomFileNum);
		if(a==0)
		{	
			STRING* char1 = "yourRandomFile_";
			str_cat(char1,	str_for_num(NULL,a));
			str_cat(char1,".txt");
			
			STRING* sTest = "     ";
			var fhandle = file_open_read(char1);
			file_str_read(fhandle,sTest);
			file_close(fhandle);
			printf("%s",sTest->chars);//show your message about you want .
            ptr_remove(sTest);
			
			ptr_remove(char1);
		}		
	}