dos窗口中,一行应该是80个字符的位置要是一行写不开,继续写就可以,不用按回车,程序自动换行在c中,一行可以写多句话,如t=a;a=b;b=t;也可以一句话写多行,如charyue[12][10]={"Januray","February","March","April","May","June","July","August","Septmber","October","November","December"};这个都是允许的