类定义public中student(int i=10):n(i){}的冒号和n(i){}是什么意思啊?
class student{
private:
int n;
public:
student(int i=10):n(i){};//冒号和n(i){}是什么意思?在书上都找不到啊
friend student operator++(student&);
void view()
{cout<<"n="<<n<<end1;}
};
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