Statements and expressions - C Tutorial

- [Instructor] In C Plus Plus a statement is a unit of code. This is statement .cpp from chapter two of the exercise files. For example, down here on line 13 we have a statement that calls the library function format and assigns its return value to the variable STR. A statement is analogous to a line of code. It may do many things but it's treated as a unit of execution. A statement is always terminated with a semicolon. An expression is anything that returns a value whether or not the value is used. An expression may be part of a statement or it may be an entire statement. Here we have an expression X equals 42. This assigns the value 42. In fact, 42 by itself is an expression. And then this assignment may be considered a statement as well as an expression and you'll notice it's terminated with a semicolon. An expression may be part of a statement or it may be the statement itself. An expression can include operators…