class A; class B { A *m_a; public:B(A *a) :m_a(a) { } }; class A { A() :b(this) { } B b; };这段代码中A() :b(this)这句话不是对成员变量b进行初始化吗 但是在B类中没有无参数的构造函数 这段代码 我看不懂
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![class A; class B { A *m_a; public:B(A *a) :m_a(a) { } }; class A { A() :b(this) { } B b; };这段代码中A() :b(this)这句话不是对成员变量b进行初始化吗 但是在B类中没有无参数的构造函数 这段代码 我看不懂](/uploads/image/z/5681661-69-1.jpg?t=class+A%3B+class+B+%7B+A+%2Am_a%3B+public%3AB%28A+%2Aa%29+%3Am_a%28a%29+%7B+%7D+%7D%3B+class+A+%7B+A%28%29+%3Ab%28this%29+%7B+%7D+B+b%3B+%7D%3B%E8%BF%99%E6%AE%B5%E4%BB%A3%E7%A0%81%E4%B8%ADA%28%29+%3Ab%28this%29%E8%BF%99%E5%8F%A5%E8%AF%9D%E4%B8%8D%E6%98%AF%E5%AF%B9%E6%88%90%E5%91%98%E5%8F%98%E9%87%8Fb%E8%BF%9B%E8%A1%8C%E5%88%9D%E5%A7%8B%E5%8C%96%E5%90%97+%E4%BD%86%E6%98%AF%E5%9C%A8B%E7%B1%BB%E4%B8%AD%E6%B2%A1%E6%9C%89%E6%97%A0%E5%8F%82%E6%95%B0%E7%9A%84%E6%9E%84%E9%80%A0%E5%87%BD%E6%95%B0+%E8%BF%99%E6%AE%B5%E4%BB%A3%E7%A0%81+%E6%88%91%E7%9C%8B%E4%B8%8D%E6%87%82)
class A; class B { A *m_a; public:B(A *a) :m_a(a) { } }; class A { A() :b(this) { } B b; };这段代码中A() :b(this)这句话不是对成员变量b进行初始化吗 但是在B类中没有无参数的构造函数 这段代码 我看不懂
class A; class B { A *m_a; public:B(A *a) :m_a(a) { } }; class A { A() :b(this) { } B b; };
这段代码中A() :b(this)
这句话不是对成员变量b进行初始化吗
但是在B类中没有无参数的构造函数 这段代码 我看不懂
class A; class B { A *m_a; public:B(A *a) :m_a(a) { } }; class A { A() :b(this) { } B b; };这段代码中A() :b(this)这句话不是对成员变量b进行初始化吗 但是在B类中没有无参数的构造函数 这段代码 我看不懂
用extern 引进变量
如在C...View类中写一行
extern C...App theApp;
那么这行下面的函数中都可以使用theApp这个变量了.(theApp是C...App类定义的变量,先在原类的实现中定义一个变量,再在别的类的实现中用extern,即在C...App.cpp先定义C...App theApp;).
We are in____ a.one class b.class one c.Class One d.Class one
We are in____ .a.one class b.Class First c.Class One d.Class one
what class are you in? 回答( ) A:class B:class three C:Class Three D:Class three
public class test(){ public Class a(int i) {} public static class b{} }public class test(){public Class a(int i) {}public static class b{}}
They are having ---A,a class B,English class.C,Chinese class请问选哪一个
判断 we are in() A ,Class three B,class 3 C,Class Three
It time for ____. a,clsss b ,have class,c,to class,d,has class
Don't talk loudly here.The students_____.A.have class B.are having class C.class D.are have class
After() class,they often play soccer.A.having B.the class C.have class D.class over顺便讲讲道理,
Is your brother in ____?A.Class three B.Class Three C.class five D.class Five
Mary and her brother are in ___.A.class one B.Class One C.one class D.One Class
have a class是什么意思
have a class meeting
have a class party
give you a class
CLASS:A怎么翻译
on a first-class
a world class photographer