Question 34

convert_position (9.212873) is an example of a valid function call.

A valid function call in programming includes the function name followed by parentheses containing any required arguments. In this case, 'convert_position' is a properly formatted function call with a numeric argument, making it valid.

A) convert_value (12) returns Val

This option suggests that 'convert_value' is a function call, but the inclusion of 'returns Val' makes it invalid in this context. A function call should not include a return statement, as it should only consist of the function name and its parameters.

B) GetHeight (integer 3, integer 4)

While 'GetHeight' appears to be a function call, the specification of types like 'integer' before the parameters is not standard syntax in most programming languages. A valid function call would typically only include the function name and the actual values or variables as arguments.

C) function Sample (float 2.0)

This option incorrectly uses the keyword 'function' within the context of a function call. Instead, it resembles a definition of a function rather than an invocation, thus making it invalid as an example of a function call.

D) convert_position (9.212873)

This option represents a valid function call as it consists of the function name 'convert_position' followed by parentheses that contain a single valid argument, a numeric value. This adheres to the standard structure of a function call.

Conclusion

Ultimately, option D is the only choice that meets all criteria for a valid function call, as it correctly follows the syntax without introducing unnecessary elements. The other options fail due to incorrect formatting, type specifications, or function definitions rather than calls.