Object Oriented Programming with C++, Second Edition

SUMMARY

• If we have declared a pointer to constant, the compiler does not allow us to change that quantity by dereferencing the pointer.
• A constant pointer means a pointer which cannot be modified after it is declared.
• If we define a constant pointer to constant then we can neither modify that pointer nor modify the quantity it points.
• Constant data member – It is possible to declare a data member of a class as constant. Such a member has to be initialized with a special syntax. For not initializing such a member, you get warning in TurboC++. It is an error with g++ compiler.
• Constant method – It is possible to declare a method of a class as constant. The keyword const is applied after method name e.g. int print() const; Such methods are forbidden ...