- sprintf(desc, "system message '%s'", which_message);
- sprintf(read_cmd, "MESG %s", which_message);
- sprintf(write_cmd, "EMSG %s", which_message);
+ snprintf(desc, sizeof desc, "system message '%s'", which_message);
+ snprintf(read_cmd, sizeof read_cmd, "MESG %s", which_message);
+ snprintf(write_cmd, sizeof write_cmd, "EMSG %s", which_message);