下列程序的输出结果是【 】。 include<iostream. h> class MyClass { public: int number; void set(int i); }; int number=3; void MyClass: :set (int i) { number=i; } void main( ) { MyClass my1; int number=10; my1.set(5), cout<<my1, number<<','; my1.set(number); cout<<my1.number<<','; my1.set(: :number); cout<<my1.number<<'.'; }