C - Basics and Execution Environment
Why does the linker sometimes produce an 'undefined reference' error during the C compilation process?
Why does the linker sometimes produce an 'undefined reference' error during the C compilation process?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand linker's role
The linker combines object files and resolves references to functions and variables.Step 2: Cause of 'undefined reference'
If a function or variable is declared but missing definition in any object file, linker errors occur.Final Answer:
Function or variable declared but not defined -> Option AQuick Check:
Undefined reference = missing definition at link time [OK]
Quick Trick: Undefined reference means missing function or variable definition [OK]
Common Mistakes:
- Blaming preprocessor for linker errors
- Confusing syntax errors with linker errors
- Assuming assembler causes undefined references
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