Template Specializations 3

What this C++ template specialization question tests

This is an easy C++ question that probes your understanding of template specialization and how the compiler resolves template instantiation. It asks you to trace through a code snippet and predict its output—a skill that separates candidates who understand C++ templates from those who only use them superficially.

To answer questions like this, you need to recognize how partial and full specializations are ranked during overload resolution, when default template arguments apply, and what the compiler actually instantiates. These concepts are foundational for writing generic code in competitive programming environments and in production systems where template metaprogramming optimizes performance.

• Template instantiation and overload resolution order
• Partial vs. full specialization
• Default template arguments
• Compiler matching rules for template candidates