Question

If a function is written with its body in curly braces, we say that this function has a block body. If it returns an expression directly, it has an expression body.

a) Block body
b) Expression body
c) Both
d) None of the above

Answer 1

In programming, a block body function is enclosed in curly braces and requires a return statement, whereas an expression body function directly returns an expression without braces. Functions can be defined with either block bodies or expression bodies, so the answer is c) Both.

Step-by-step explanation:

When distinguishing between the two types of function bodies in programming, namely block body and expression body, we're referring to the syntax used in defining the function and what that implies about the function's behavior.

A block body function is one where the body of the function is enclosed in curly braces ({ }). Within these braces, multiple statements can be written, and if the function is meant to return a value, a return statement must be explicitly used.

An expression body function, on the other hand, does not use curly braces and instead returns the value of the expression directly following an arrow (=> in languages like JavaScript and => in languages like Dart). This form is generally used for short, simple functions that consist of a single expression.

Therefore, the correct answer to whether a function with a block body and a function that returns an expression directly are a) Block body, b) Expression body, c) Both, or d) None of the above would be c) Both, as these descriptions are referring to different styles of function declaration.