import std.stdio;
class Adder {
public:
// constructor
this(int i = 0) {
total = i;
}
// interface to outside world
void addNum(int number) {
total += number;
}
// interface to outside world
int getTotal() {
return total;
};
private:
// hidden data from outside world
int total;
}
void main( ) {
Adder a = new Adder();
a.addNum(10);
a.addNum(20);
a.addNum(30);
writeln("Total ",a.getTotal());
}
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/266067.html