explicit:c++ specifies that when a constructor with only one parameter is defined, an implicit type conversion is also defined

Explicit research explicit is a keyword in C + +, not in C. The literal translation of English is "definite" and "explicit" meaning. The reason for this keyword is that it is defined in C + +: When a constructor with only one parameter is defined, an implicit type conversion is also specified. look at the type conversion first. http://blog.csdn.net/guodongxiaren/article/details/24455653

explicit:c++ specifies that when a constructor with only one parameter is defined, an implicit type conversion is also defined