The difference between C + + const and # define

C + + can use the const to define constants, or define constants using define #, which has more advantages than the latter.

1) const data constants have data types, and macro constants do not have data types. The compiler can perform type safety checks on the former and only string substitution for the latter

2) Some integrated debugging tools can debug const constants, but cannot debug macro constants, only const constants are used in C + + and macro constants are not used

When the const in C is decorated with a normal variable, in c it always takes up memory, and its name is the global symbol.

C Forcing programmers to use # define in the preprocessor

The difference between C + + const and # define