c++еexplicitؼĹ캯ù캯ʽģȻ"ʽ"ôȻ"ʽ"ôʲôʾʲôʽأ

c++Ĺ캯һôڱʱͻһȱʡתù캯Ӧ͵תΪʾ
class MyClass
{
public:
MyClass( int num );
}
....
MyClass obj = 10; //ok,convert int to MyClass
ĴбԶתΪMyClassʵϵͬĲ
MyClass temp(10);
MyClass obj = temp;
еĲν"ʽת"

ҪԶתĹܣǸôأٺǹؼexplicitˣĹ캯Ϊ"ʾ"Ҳ캯ʱǰexplicitɣͿԷֹԶת޸MyClassĹ캯ΪʾģôĴͲܹͨˣʾ
class MyClass
{
public:
explicit MyClass( int num );
}
....
MyClass obj = 10; //err,can't non-explict convert