How do you call a function in programming?

To call a function in programming, the correct approach involves writing the function name followed by parentheses. This is a fundamental aspect of many programming languages, where the parentheses indicate that a specific block of code (the function) is being executed. When you place the function name and use parentheses, it essentially directs the program to execute the predefined code encapsulated within that function.

The parentheses may also include arguments, which are values passed into the function to be processed. For example, if a function is defined to take parameters, calling it with specific values allows for dynamic execution based on the input provided.

In contrast, simply typing the function name as a command without parentheses would not invoke the function; the system would treat it as a reference to the function rather than executing its code. Similarly, defining a function first is a prerequisite before calling it, but it does not describe the action of invoking the function itself. Using a function identifier does not clearly convey the act of executing a function, which is specifically done through the combination of the function name and parentheses.