OMG code :(

Who writes code that does:

sprintf(buf, "this is a constant string");
strcat(str, buf );

Over and over again.

Maybe the same person who writes code that does:

int cksum = 0;
// this is really simple
// just add all the bytes, modulo the MAX storable value
// in the cksum
for (i=0; i < len; i++)
	cksum += buf[i];

Or does:

 msg.flags = 0;
 if (flags & FLAG1) 
       msg.flags = FLAG1;
 if (flags & FLAG2) 
       msg.flags |= FLAG2;
 if (flags & FLAG3) 
       msg.flags |= FLAG3;
 if (flags & FLAG4) 
       msg.flags |= FLAG4;

// that should be one line:

msg.flags = flags & (FLAG1|FLAG2|FLAG3|FLAG4);

I am in pain. So much pain.