错了，删除# PDA - 掌中宝
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You have a class that many libraries depend on. You need to modify the class
for one application. Which of the following changes require recompiling all
libraries before it is safe to build the application?
a. add a constructor
b. add a data member
c. change destructor into virtual
d. add an argument with default value to an existing member function
for one application. Which of the following changes require recompiling all
libraries before it is safe to build the application?
a. add a constructor
b. add a data member
c. change destructor into virtual
d. add an argument with default value to an existing member function
