What is the use of the inline function in C++?

Answer:

The use of inline functions generates faster code and can sometimes generate smaller code than the equivalent function call generates for the following reasons:

• It saves the time required to execute function calls.
• Small inline functions, perhaps three lines or less, create less code than the equivalent function call because the compiler doesn’t generate code to handle arguments and a return value.
• Functions generated inline are subject to code optimizations not available to normal functions because the compiler does not perform interprocedural optimizations.