Do C Built-in Types Actually Have Default Constructors?

Do Built-In Types Have Default Constructors?

In the realm of C , primitive types are often assumed to lack constructors. However, a passage from TC PL claims otherwise, stating that even built-in types have default constructors. To clarify this apparent contradiction, we delved into the nuances of value initialization and constructor syntax.

Value Initialization: A Distraction

After reading the article, it became clear that int() yields 0 due to value initialization, not because of a default constructor call. This led to the belief that primitive types do not possess constructors.

Constructor-Like Syntax: A Misnomer

Furthermore, the TC PL text uses "constructor-like" syntax, such as int(), to initialize built-in types. However, this syntax does not actually invoke a constructor. Instead, it performs value initialization.

Bjarne's Clarification: A Conceptual Distinction

Upon seeking clarification from the text's author, Bjarne Stroustrup explained that the text refers to a conceptual distinction. Built-in types are considered to possess constructors despite not formally adhering to the standard definition of constructors.

Conclusion: A Unique Approach

In C , primitive types behave as if they have constructors, even though they technically do not. This allows for convenient initialization using constructor-like syntax. It's important to understand this unique characteristic of built-in types to avoid confusion and ensure proper understanding in C programming.

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