Why does MyClass myObj(); lead to ambiguity in C ?

Ambiguity in Empty Constructor Declaration

When encountering the declaration MyClass myObj();, the compiler evaluates the possibility of either an object definition with an empty initializer or a function declaration. However, according to the C language standard, this ambiguity is consistently resolved in favor of a function declaration.

The use of empty parentheses in a constructor declaration is only allowed in certain contexts, such as in a new expression or when constructing a value-initialized temporary object.

In the case described in the original question, the correct syntax for declaring an object without any arguments is MyClass myObj;, as the parentheses were incorrectly associated with the constructor declaration and not as an empty initializer. This can potentially lead to parse errors in some compilers.

It's important to note that this behavior is dictated by the C language standard and not a limitation of the specific compiler being used. Therefore, it's a good practice to follow the correct syntax to avoid confusion and ensure compatibility with different compilation environments.

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