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feat: 统一 cpp 文件编码格式为 utf-8

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This commit is contained in:
tracyxiong1
2023-01-02 20:39:00 +08:00
parent ade7173887
commit 368eda305f
63 changed files with 327 additions and 327 deletions
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4
practical_exercises/10_day_practice/day4/const用法/常对象与常引用.cpp
View File

@@ -13,12 +13,12 @@ class A
int main()
{ double d(9.5);
display(d);
A const a(3,4); //a<EFBFBD>dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD>󣬲<EFBFBD><EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
A const a(3,4); //a是常对象，不能被更新
system("pause");
return 0;
}
void display(const double& r)
//<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>βΣ<EFBFBD><EFBFBD>ں<EFBFBD><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><EFBFBD>ܸ<EFBFBD><EFBFBD><EFBFBD> r<><72><EFBFBD><EFBFBD><EFBFBD>õĶ<C3B5><C4B6><EFBFBD><EFBFBD><EFBFBD>
//常引用做形参，在函数中不能更新 r所引用的对象。
{ cout<<r<<endl; }

22
practical_exercises/10_day_practice/day4/const用法/常对象与普通函数.cpp
View File

@@ -3,37 +3,37 @@ using namespace std;
class R
{ public:
R(int r1, int r2){R1=r1;R2=r2;}
//const<EFBFBD><EFBFBD><EFBFBD>ֳ<EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD><EFBFBD><EFBFBD>
//const区分成员重载函数
void print();
void print() const;
private:
int R1,R2;
};
/*
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>const;
<EFBFBD><EFBFBD><EFBFBD>const<EFBFBD>Ǻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɲ<EFBFBD><EFBFBD>֣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ֲ<EFBFBD><EFBFBD><EFBFBD>ҲҪ<EFBFBD><EFBFBD>const<EFBFBD>ؼ<EFBFBD><EFBFBD>֡<EFBFBD>
const<EFBFBD>ؼ<EFBFBD><EFBFBD>ֿ<EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD>ܵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
常成员函数说明格式：类型说明符 函数名（参数表）const;
这里，const是函数类型的一个组成部分，因此在实现部分也要带const关键字。
const关键字可以被用于参与对重载函数的区分
通过常对象只能调用它的常成员函数
*/
void R::print()
{
cout<<"<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<endl;
cout<<"普通调用"<<endl;
cout<<R1<<":"<<R2<<endl;
}
//ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//实例化也需要带上
void R::print() const
{
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"<<endl;
cout<<"常对象调用"<<endl;
cout<<R1<<";"<<R2<<endl;
}
int main()
{
R a(5,4);
a.print(); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>void print()
//ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD>ܵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
a.print(); //调用void print()
//通过常对象只能调用它的常成员函数
const R b(20,52);
b.print(); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>void print() const
b.print(); //调用void print() const
system("pause");
return 0;
}