文章浏览阅读216次。问题原因: 如何取消CentOS命令后每次会出现的『You have new mail in /var/spool/mail/root』提示?解决方案:echo "unset MAILCHECK" >> /etc/profilesource /etc/profile..._centos命令行安装gnome you have new mail...
文章浏览阅读210次。public static void main(String[] args) { System.out.println("请输入购买数量?"); int num = new Scanner(System.in).nextInt(); int num1 = 10; if(num>=0){ if (num1>=num){ System.out.println("购买成功"); num1=num1-num; Syste......