Examlex
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Header File
A file containing C or C++ declarations and macro definitions to be shared between several source files or to make them available to a large code base.
#include
A preprocessor directive in C/C++ used to include the contents of a file or library in a program before compilation.
Fabs
fabs is a mathematical function in C that computes the absolute value of a floating-point number.
Common Logarithm
A logarithm with base 10, often used in scientific calculations.
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