考虑这两个代码片段,这个工作正常:
sum += polygon[i]; sum += polygon[i];
生成warning: comparison between signed and unsigned我是C ++世界的新手,所以unsigned变量对我来说看起来有些可怕,而且我知道unsigned如果
MariaDB [sqdc]> create table area( id int auto_increment primary key unsigned)engine=InnoDB default charsetcheck the manual that corresponds to your MariaDB server version for the right syntax to use near 'unsigned