浮点异常C代码

Question

给定的代码产生浮点异常，谁能告诉我这是由什么引起的？

int play(t_env* env, t_pos* pos)
{
    pid_t   pid;
    int     ret;
    t_data  data;   
    int     status;

    pos->addx = 1;
    pos->addy = 0;
    pos->x = 2 + rand() % data.row;
    pos->y = 2 + rand() % data.col;
    pid = getpid();
    ret = waitpid(WAIT_ANY, &status, WNOHANG);

    if (ret == -1)
    {
            id_print_str("Error during waiting stat");
            exit(1);
    }
    while (pos->x != data.row)
    {
            tputs(tgoto(env->cm, pos->x, pos->y), 1, id_put);
            id_print_char('1');
            sleep(1);
            pos->x = pos->x + pos->addx;
            pos->y = pos->y + pos->addy;

    return (0);
}

Answer 1

根据给定的代码，我想，只有在这里才可能，

pos->x = 2 + rand() % data.row;
pos->y = 2 + rand() % data.col;

确保 data.row 和 data.col 非零。否则，问题可能出在其他地方。