The video tutorial covers the basics of functions in C++, including the importance of function declarations and prototypes. It explains how the C compiler handles function names and the necessity of declaring functions before use. The tutorial also discusses organizing functions into separate files and using header files for declarations. It demonstrates creating and using functions, highlighting the difference between global and member functions. The video emphasizes best practices for function organization and the role of prototypes in ensuring successful compilation.

Why is it necessary to declare a function before using it in C++?

• To avoid runtime errors

• To inform the compiler about the function's existence

• To improve code readability

• To reduce memory usage

What assumption does the C compiler make if a function is not declared?

• It assumes the function returns a float

• It assumes the function returns a void

• It assumes the function returns an integer

• It assumes the function returns a double

Why is it inconvenient to write function prototypes in every file?

• It increases the file size

• It makes the code less readable

• It can lead to multiple definitions

• It is time-consuming and error-prone

What is the purpose of a header file in C++?

• To compile the code

• To execute the program

• To store the main function

• To declare functions and share them across files

What happens if you include a source file instead of a header file?

• The program will use more memory

• The program will not compile

• The program will have multiple definitions

• The program will run faster

What is a characteristic of the 'print' function discussed in the video?

• It returns an integer

• It returns a character

• It returns a string

• It does not return any value

What is the difference between global functions and member functions?

• Global functions are defined inside classes

• Member functions are defined outside classes

• Member functions are accessible throughout the program

• Global functions are accessible throughout the program