In c++ risks is a reference to a variable which exists i.e. one 2nd name for the same variable.
This program is broken up into functions.露the function hand constitutes the entrance point of the program, firstly there is the function message which us affiche hello , and the second function produced 露procedure affich_calcul, one declared the prototype and one it definite after one made the call has this function.
說明： 基于單片機的rc522模塊的門禁系統(tǒng)源碼以及原理圖(The source code and schematic diagram of the entrance guard system of rc522 module based on single chip microcomputer)
