DevWiki/CPlusPlusThings
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update 中括号重载.cpp

Browse Source
This commit is contained in:
Francis
2020-06-14 19:28:32 +08:00
committed by GitHub
parent 1ca9bceb61
commit e4cf08593b
1 changed files with 49 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

91
practical_exercises/key_exercises/中括号重载.cpp
View File

@@ -1,51 +1,58 @@
//Eg8-9.cpp
#include <iostream>
#include <cstring>
using namespace std;
struct Person{ //ְ<><D6B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD>Ľṹ
double salary;
char *name;
struct Person
{ //职工基本信息的结构
double salary;
char *name;
};
class SalaryManaege{
Person *employ; //<2F><><EFBFBD><EFBFBD>ְ<EFBFBD><D6B0><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int max; //<2F><><EFBFBD><EFBFBD><EFBFBD>±<EFBFBD><C2B1>Ͻ<EFBFBD>
int n; //<2F><><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>ʵ<EFBFBD><CAB5>ְ<EFBFBD><D6B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
class SalaryManaege
{
Person *employ; //存放职工信息的数组
int max; //数组下标上界
int n; //数组中的实际职工人数
public:
SalaryManaege(int Max=0){
max=Max;
n=0;
employ=new Person[max];
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><C7BF><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD>ڷ<EFBFBD><DAB7><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5>ֱ<EFBFBD><D6B1>ʹ<EFBFBD><CAB9>
double &operator[](char *Name) { //<2F><><EFBFBD><EFBFBD>[]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
Person *p;
for(p=employ;p<employ+n;p++)
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
if(strcmp(p->name,Name)==0)
return p->salary;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
p=employ + n++;
p->name=new char[strlen(Name)+1];
strcpy(p->name,Name);
p->salary=0;
return p->salary;
}
SalaryManaege(int Max = 0)
{
max = Max;
n = 0;
employ = new Person[max];
}
//返回引用特性是可以直接在放在左值，直接使用
double &operator[](char *Name)
{ //重载[]，返回引用
Person *p;
for (p = employ; p < employ + n; p++)
//如果存在处理
if (strcmp(p->name, Name) == 0)
return p->salary;
//不存在情况处理
p = employ + n++;
p->name = new char[strlen(Name) + 1];
strcpy(p->name, Name);
p->salary = 0;
return p->salary;
}
void display(){
for(int i=0;i<n;i++)
cout<<employ[i].name<<" "<<employ[i].salary<<endl;
}
void display()
{
for (int i = 0; i < n; i++)
cout << employ[i].name << " " << employ[i].salary << endl;
}
~SalaryManaege() {
delete employ;
}
};
int main(){
int main()
{
SalaryManaege s(3);
s["<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"]=2188.88;
s["<EFBFBD><EFBFBD>˹"]=1230.07;
s["<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"]=3200.97;
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\t"<<s["<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"]<<endl; cout<<"<EFBFBD><EFBFBD>˹\t"<<s["<EFBFBD><EFBFBD>˹"]<<endl;
cout<<"<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\t"<<s["<EFBFBD><EFBFBD><EFBFBD><EFBFBD>"]<<endl;
cout<<"-------<2D><>Ϊdisplay<61><79><EFBFBD><EFBFBD><EFBFBD><EFBFBD>--------\n\n";
s.display();
system("pause");
}
s["张三"] = 2188.88;
s["里斯"] = 1230.07;
s["王无"] = 3200.97;
cout << "张三\t" << s["张三"] << endl;
cout << "里斯\t" << s["里斯"] << endl;
cout << "王无\t" << s["王无"] << endl;
cout << "-------下为display的输出--------\n\n";
s.display();
}