What are 'inline' functions?

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Smita Santosh

Experienced Computer trainer having worked in IT sector for 20 years.

An inline function is one for which the compiler copies the code from the function definition directly into the code of the calling function rather than creating a separate set of instructions in memory. This eliminates call-linkage overhead and can expose significant optimization opportunities.
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Professional Trainer

An inline function in C++ is an optimisation feature that reduces the execution time of a program, just as we have macros in C
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