cannot convert from 'const class Line' to 'class Line

来源：学生作业帮编辑：百度作业网作业帮分类：综合作业时间：2024/07/19 06:34:30

cannot convert from 'const class Line' to 'class Line
#include
using namespace std;
class Point{
private:
\x09double xx,yy;
\x09friend class Line;
public:
\x09Point(double a=0,double b=0){
\x09\x09xx=a;
\x09\x09yy=b;
\x09\x09cout

Line& start() const {return (*this);};应该写成const Line& start() const {return (*this);};
常量方法返回值必须是常量,否则我们就可以获得对常量的修改权,这就矛盾了.

I'm 4 years ()than you class line up from() to taller Line up from（）to（）.class A smaller bigger B young old C shor the runners from Class Two passed the finishing line first line up from shorter to taller是什么意思? Line up from younger to—— line up from younger to older line I went from subway line to subway line only to find that mos Line up from oldest to youngeat的中文意思 up,stronger,line,thinner,to,from(.)(连词成句) line up、youger、from、older、to连词成句 from,up,shorter,longer,to,line(.)连词成句,谢谢