What Happens to Class Members When You Skip Initialization in C ?

Default Initialization in Classes

When class members are not explicitly initialized, their initialization behavior mirrors that of local variables in functions.

Objects:
Default constructors are invoked for objects. For example, std::string initializes to an empty string. If a default constructor is absent, explicit initialization becomes an absolute requirement.

Primitive Types:
Primitive types (except booleans) retain any arbitrary values residing in their allocated memory locations.

References:
References must be initialized; omitting initialization leads to compilation errors.

Specific Member Initialization:

In your case, if no initialization is provided:

• ptr: Contains garbage values.
• name: An empty string "".
• pname: Stores garbage values.
• rname, crname: Compilation error (uninitialized reference).
• age: Contains random data.

This knowledge aids in writing bug-free programs by ensuring proper member initialization, reducing the likelihood of undefined behavior and unexpected results.

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