我尝试在Ubnutu 9.10上使用C语言定义一个64位宽的整数。9223372036854775808等于2^23
long long max=9223372036854775808
long max=9223372036854775808
当我编译它时,编译器给出了警告消息:
binary.c:79:19: warning: integer constant is so large that it is unsigned
binary.c: In function ‘bitReversal’:
binary.c:79: warning: this decimal constant is u
升级到Ubuntu14.04之后,MySQL5.5.9与我的一些脚本不兼容。我需要重新安装Mysql 5.1.我试过在网上做研究,但没有运气。
当我这么做
apt-get install mysql-server-5.1 mysql-client-5.1
Package mysql-server-5.1 is not available, but is referred to by another package.
这可能意味着包丢失了,已经过时,或者只能从另一个来源获得,但是以下包替换它: mysql-server-core-5.5 :i 386 mysql-server-5.5 :i 3