What is the main advantage of separating function declaration from its definition, especially in large projects?

  • Code Reusability
  • Compilation Efficiency
  • Encapsulation
  • Improved Debugging
The main advantage of separating function declaration from its definition, especially in large projects, is Compilation Efficiency. By separating the declaration from the definition, you can create header files containing function declarations that can be included where needed. This reduces compilation time because changes to function implementations won't trigger recompilation of all files that include the header.
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