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Light-City
2020-04-06 00:57:02 +08:00
parent f97c156cc4
commit a4d828bb4c
120 changed files with 4413 additions and 0 deletions
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8
practical_exercises/10_day_practice/day5/基类与派生类关系/readme.md Normal file
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practical_exercises/10_day_practice/day5/基类与派生类关系/基类与派生类(重要).cpp Normal file
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#include <iostream>
using namespace std;
class A {
int a;
public:
void setA(int x){ a=x; }
int getA(){ return a;}
};
class B:public A{
int b;
public:
void setB(int x){ b=x; }
int getB(){ return b;}
};
void f1(A a, int x)
{ a.setA(x); }
void f2(A *pA, int x)
{ pA->setA(x); }
void f3(A &rA, int x)
{ rA.setA(x); }
int main(){
A a1,*pA;
B b1,*pB;
a1.setA(1);
b1.setA(2);
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
a1=b1;
cout<<a1.getA()<<endl;
cout<<b1.getA()<<endl;
a1.setA(10);
cout<<a1.getA()<<endl;
cout<<b1.getA()<<endl;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ַ<EFBFBD><D6B7>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>롣
pA=&b1;
pA->setA(20);
cout<<pA->getA()<<endl;
cout<<b1.getA()<<endl;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD>
A &ra=b1;
ra.setA(30);
cout<<pA->getA()<<endl;
cout<<b1.getA()<<endl;
b1.setA(7);
cout<<b1.getA()<<endl;
f1(b1,100);
cout<<"1111111111"<<endl;
cout<<b1.getA()<<endl; //7
f2(&b1,200);
cout<<b1.getA()<<endl;
f3(b1,300);
cout<<b1.getA()<<endl;
system("pause");
return 0;
}