SICURIX Security Wristbands, Sequentially Numbered, 10" x 0.75", Blue, 100/Pack

An inline function is a function that is defined in the header file using the "inline" keyword. When an inline function is called, the compiler replaces the function call with the actual code of the function, similar to how a macro works. This can lead to faster code execution, as there is no overhead from the function call. However, inline functions can also increase the size of the compiled code, as the same code is repeated multiple times throughout the program. Therefore, inline functions are best used for small, frequently called functions.