// lab4.cpp : Defines the entry point for the console application.
//
#include <stdafx.h>
#include <iostream>
#include <memory.h>
#include <conio.h>
#include <string.h>
using namespace std;
struct Pair
{
char name[21]; //имя
int value; //значение
Pair& operator=(int);//установить значение
Pair& operator=(const char*);//установить имя
friend istream& operator>>(istream& is, Pair&);//ввод
friend ostream& operator<<(ostream& os, Pair&);//вывод
};
Pair& Pair::operator=(int x)
{
value=x;
return (Pair&)x;
}
Pair& Pair::operator=(const char* nm)
{
strcpy(name,nm);
return (Pair&)name;
}
istream& operator>>(istream& is, Pair& p)
{
printf("oper vvoda");
return (is>>p.name>>p.value);
}
ostream& operator<<(ostream& os, Pair& p)
{
return (os<<p.name<<" = "<<p.value<<endl);
}
class Pairs
{
public:
Pairs();
Pairs(int);
Pairs(const Pairs&);
~Pairs();
private:
Pair* prs; //массив пар
int length; //размер массива
int count; //заполненное количество пар
public:
void Init(int len);
bool GetValue(char *, int&);
int SetValue(char*, int);
friend void Print(const Pairs&);
Pairs& operator=(const Pairs&);//копирование пар
Pairs& operator+=(Pairs&);//добавление пар
Pairs& operator+=(const Pair&);//добавление новой пары
char * operator[](int);//получение имени по значению
int operator[](const char *);//получение значения по имени
friend ostream& operator<<(ostream& os, const Pairs&);//вывод
};
Pairs& Pairs::operator+=(Pairs& pr)
{
length=pr.length+1;
return (Pairs&)prs;
}
Pairs& Pairs::operator+=(const Pair& p)
{
for (int i=0; i<count; i++)
{
if (strcmp(prs[i].name,p.name)==0)
{
prs[i] = p.value;
return (Pairs&)prs;
}
}
if ((count < length) && (count >= 0))
{
prs[count] = p.name;
prs[count] = p.value;
count++;
return (Pairs&)prs;
}
}
Pairs& Pairs::operator =(const Pairs& t)
{
if (this!=&t)
{
count = t.count;
length = t.length;
prs = new Pair[t.length];
for (int i=0; i<t.count; i++)
prs[i] = t.prs[i];
}
return (Pairs&)prs;
}
int Pairs::operator[](const char* nm)
{
for (int i=0; i<count; i++)
if (strcmp(prs[i].name,nm)==0)
return(prs[i].value);
}
char* Pairs::operator[](int vl)
{
for (int i=0; i<count; i++)
if (prs[i].value==vl)
return (prs[i].name);
return ("no");
}
ostream& operator<<(ostream& os, const Pairs& pr2)
{
for (int i=0;i<pr2.count;i++)
os<<pr2.prs[i]<<endl;
return os;
}
Pairs::Pairs()
{
printf("Defualt constructor is done!\n");
}
Pairs::Pairs(int len)
{
length = len;
count = 0;
prs = new Pair[len];
printf("constructor is done!\n");
}
Pairs::~Pairs()
{
delete [] prs;
printf("Destructor is done\n");
}
Pairs::Pairs(const Pairs &pp)
{
count = pp.count;
length = pp.length;
prs = new Pair[length];
for (int i=0; i<count; i++)
{
strcpy(prs[i].name, pp.prs[i].name);
prs[i].value = pp.prs[i].value;
}
printf("copy constructor is done\n");
}
void Pairs::Init(int len)
{
length = len;
count = 0;
prs = new Pair[len];
}
int Pairs::SetValue(char* name, int value)
{
for (int i=0; i<count; i++)
{
if (strcmp(prs[i].name,name)==0)
{
prs[i] = value;
return 2;
}
}
if ((count < length) && (count >= 0))
{
prs[count] = name;
prs[count] = value;
count++;
return 1;
}
else
return 0;
}
bool Pairs::GetValue(char *name, int& value)
{
bool b = false;
for (int i=0; i<count; i++)
if (strcmp(prs[i].name,name)==0)
{
value = prs[i].value;
b=true;
}
return b;
}
void Print(const Pairs& p)
{
for (int i=0; i<p.count; i++)
{
printf("%s=%d ", p.prs[i].name, p.prs[i].value);
}
printf("\n");
}
void main()
{
Pairs p1;
int len, val1;
char name[21];
int answer, a;
bool d = false;
cout<<"Enter lenght of pairs..."<<"\n";
cin>>len;
Pairs p = Pairs(len);
do
{
printf("What do you want to do? (Set/Print/Get/Copy/Add pair/Exit)");
answer = getche();
cout << "\n";
if (answer < 'a')
answer = answer + ('a'-'A');
switch(answer){
case 's':
Pair q;
cin>>q;
p+=q;
break;
case 'p':
cout<<p;
break;
case 'g':
printf("Do you want get by Name or Value");
answer = getche();
cout << "\n";
if (answer < 'a')
answer = answer + ('a'-'A');
if (answer=='n')
{
printf("Enter name = ");
scanf("%s",name);
a = p[name];
if (!a)
printf("Name is not found... Try again?\n");
else
printf("Value = %d\n", a);
}
if (answer=='v')
{
printf("Enter value = ");
scanf("%d",&val1);
if (p[val1]=="no")
printf("Value is not found... Try again?\n");
else
printf("Name = %s\n", p[val1]);
}
break;
case 'c':
p1 = p;
printf("Do you want to print of copy pairs? (y/n) ");
if (getche()=='y')
Print(p1);
break;
case 'a':
p+=p;
break;
case 'e':
printf("Good bye!!!\n");
break;
default:
printf("Input error!!!\n");
}
}while (answer != 'e');
getch();
}
