Home >Backend Development >C++ >Why Doesn't My C Constructor Get Called?
Why Does Constructor Remain Uncalled?
In the provided C code, a class called Class is defined with a default constructor and destructor that print messages during object creation and destruction, respectively. However, when attempting to create an instance of this class, no constructor call appears in the main function. Instead, a function declaration is inadvertently declared.
To fix this issue and ensure the proper invocation of the default constructor, the line Class object(); in the main function should be modified to Class object;. This alteration correctly declares an object of type Class and triggers the execution of its default constructor.
Furthermore, the issue demonstrates a potential pitfall known as the "most vexing parse" in C . In this case, the parser erroneously interprets the declaration Class object(); as a function declaration instead of an object declaration. To prevent this, the semicolon appearing after the object declaration should be eliminated.
The above is the detailed content of Why Doesn't My C Constructor Get Called?. For more information, please follow other related articles on the PHP Chinese website!