Complete Modern C++ - Operator Overloading - Part III (Global Overloads)

The video tutorial explains type conversion and how it allows primitive types to be used in expressions with objects. It covers operator overloading, focusing on the plus operator and how it can be overloaded as a global function to work with different operand types. The tutorial also discusses overloading the insertion and extraction operators to enable direct input and output of custom objects. Finally, it introduces the function call operator, highlighting its utility in templates and callbacks.

Discuss the importance of returning the ostream object in the overloaded insertion operator.

Describe the process of overloading the extraction operator for an integer object.

What is the function call operator and how can it be utilized in templates?