Use of the explicit keyword in C + +

First, explicit effect:

In C + +, the explicit keyword is used to modify the constructor of a class, the class of a constructor that is decorated, the corresponding implicit type conversion cannot occur, and the type conversion can only be performed in a display way.

Second, explicit use precautions:

• The explicit keyword can only be used on a constructor declaration inside a class.
• The explicit keyword is used as a constructor for a single argument.
• In C + +, the explicit keyword is used to modify the class's constructor, the class of the constructor being decorated, and the corresponding implicit type conversion cannot occur

Reference Blog: http://www.cnblogs.com/this-543273659/archive/2011/08/02/2124596.html

http://blog.csdn.net/chollima/article/details/3486230

Use of the explicit keyword in C + +