C + + Fundamentals (i): Members and map

struct Date{int day, month, year;void init (int dd, int mm, int yy);}; void Date::init (int dd, int mm, int yy) {day = Dd;month = Mm;year = yy;} int main () {Date date;date.init (1,3,4);cout<<date.day;  1return 0;}

1. In fact, it is the same as the member variables in Python, but it is much more troublesome to write.

Class Date (object):d EF __init__ (Self, day): Self.day = Daydate = Date (3) Print Date.day

Dictionary in 2.c++ (map)

      
Since each map data corresponds to a node on a red-black tree, this node takes up 16 bytes when not saving your data, a parent node pointer, left and right child pointers, and an enumeration value (labeled Red-black, equivalent to the balance factor in the balanced binary tree), which is very memory-intensive.    

　　

C + + Fundamentals (i): Members and map