Where Should Default Parameter Values Be Placed in C ?

Default Parameter Placement in C

This question addresses the placement of default parameter values in C code. It seeks to determine whether these values should be specified only in the function definition, the declaration, or both locations.

According to the accepted answer, default parameter values should exclusively be placed in the declaration. This ensures that they are consistently visible to callers, regardless of the function definition. The reason being that the declaration is the only aspect of the function that the caller interacts with.

However, it's important to note that default parameter values can also be included in the definition. However, this practice is discouraged because it can lead to inconsistency in code. By consistently placing default values in the declaration, developers ensure clarity and maintainability throughout their codebase.

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