Message passing in C++ refers to the process of communication between two or more objects or components in a program. It is a fundamental mechanism that allows objects to interact by invoking methods or functions on each other. In other words, message passing is the exchange of information between two or more objects via a logical entity known as a message. A message for an object is a request for the execution of a procedure, and it will invoke a function in the receiving object that produces the desired results.
Technically, there are no differences between the terms "method call" and "message passing". The term "method call" is used to depict a single method that is invoked directly, while the term "message passing" is used to illustrate the communication between two objects.
Message passing in C++ involves passing objects or data between different parts of a program using functions, methods, or message queues. Objects communicate by sending and receiving data. Message passing entails specifying the objects name, the functions name, and the data to be sent.
In summary, message passing in C++ is a way for objects to communicate with each other by exchanging information via a logical entity known as a message. It involves passing objects or data between different parts of a program using functions, methods, or message queues.
