Real-time Sensors Program

Question

It's not as grand as a package management wrapper, but...
Here's the code for a simple C program that will run sensors much like top. I'm sure there's something better out there but I'm not an uber coder yet so, this is my contribution
#include <ncurses.h>
#include <stdlib.h>
#include <string.h>
int main()
int ch;
int exch = -1; /* halfdelay assigns -1 to getch() */
int fileid;
char filepath[50];
char filebuf[50];
char sysbuf[50];
FILE *fp;
/* avoid different users trying to access the same temp file
by creating random file names */
srand( ( unsigned int ) time( NULL ) );
fileid = rand();
strcpy( filepath, "/tmp/sensorsrt-");
sprintf( filebuf, "%d", fileid );
strcat( filepath, filebuf );
initscr();
raw();
noecho();
halfdelay(1);
curs_set(0);
while ( exch == -1 ) {
/* Check buffer for input to exit loop */
exch = getch();
/* run bash command to create temp file with sensor data */
sprintf( sysbuf, "sensors > %s", filepath );
system( sysbuf );
/* open file; if not, exit gracefully */
fp = fopen( filepath, "r" );
if ( fp == NULL ) {
perror( "Cannot open input file" );
exit(1);
/* Print file to screen buffer */
while (( ch = fgetc( fp )) != EOF ) {
if ( ch == 194 ) continue; /* check for strange characters, you may need to edit this line */
printw( "%c", ch );
printw( "Press any key to exit" );
/* Print file buffer to screen */
refresh();
/* Sensors updates about once every 2 seconds */
sleep(2);
/* Check buffer for input to exit loop */
exch = getch();
fclose( fp );
move(0, 0);
endwin();
/* remove file from /tmp, as it is no longer needed */
sprintf( sysbuf, "rm %s", filepath );
system( sysbuf );
return 0;

Answer 1

funny. I also made a 2 player snake game a while ago.
game link: http://home.hccnet.nl/l.vrooland/spel/lineGame.html
and i also tried to make it multiplayer. (i think a lot of old arcade games have a good multiplayer potential)
I didnt get very far. I guess that was because i went way to fast. (i wanted a lobby, server, ....)
after a while i tried again. i made a 2 player space invaders type of game. AND IT WORKED. the game isnt complete yet (no sync, hit detection or score system) but you do see the enemy ship move and shoot.
this game consisted of 1 application that can act as server or client.
1 client enters a port number (serversocket) and waits, and th other an IP an port number (socket) and connects. after connection the game starts.
i had a TCP/IP connection. a string would be sent over the socket with every move ("left","right","stop","shoot")
i can put some pieces of code here if you want it?
or i gan give the .java file.
im not working on it anymore. i now use it as a template for bigger projects.