Приложение ф (обязательное) Программный код 7.2.1

#include <iostream>

#include <conio.h>

using namespace std;

struct strochki

{

string a;

};

strochki operator+ (const strochki& X, const strochki& Y)

{

strochki c;

c.a = X.a + Y.a;

return c;

}

void operator += (strochki& k, const strochki& l)

{

k.a += l.a;

}

int main()

{

strochki pervaya, vtoraya;

pervaya.a = "Gutten ";

vtoraya.a = "Morgen ";

strochki tri = pervaya + vtoraya;

cout << tri.a << "\n";

pervaya += vtoraya;

cout << pervaya.a;

_getch();

}

Приложение х (обязательное) Программный код 8.1.1

#include <iostream>

using namespace std;

long int StrLen(char* _str)

{

long int size = 0;

for (; _str[size] != 0; size++);

return size;

}

void StrCpy(char* in_str, char* src_str)

{

for (int i = 0; i < StrLen(in_str); i++)

in_str[i] = src_str[i];

}

class MyString

{

private:

char* str;

long int length;

long int capacity;

public:

MyString()

{

str = NULL;

NewStr();

}

MyString(char* str, int length)

{

this->str = str;

this->length = length;

}

void AddChar(char c)

{

if (length + 1 >= capacity)

{

capacity += 128;

char* newStr = new char[capacity];

if (length > 0)

{

StrCpy(newStr, str);

}

delete[] str;

str = newStr;

}

str[length] = c;

length++;

}

void NewStr()

{

// delete str;

str = NULL;

length = 0;

capacity = 0;

char c;

while ((c = getchar()) != '\n')

{

AddChar(c);

}

}

void display()

{

for (int i = 0; i < length; i++)

cout << str[i];

}

void operator+=(const MyString& rhs)

{

int sz = this -> length + rhs.length;

char* ts = new char[sz];

for (int i = 0; i < this->length; i++)

ts[i] = this->str[i];

for (int i = this->length, j = 0; i <= sz; i++, j++)

ts[i] = rhs.str[j];

delete[] this->str;

this->str = ts;

this->length = sz;

}

MyString& operator+(const MyString& rhs)

{

int sz = this-> length + rhs.length;

char* ts = new char[sz];

for (int i = 0; i < this->length; i++)

ts[i] = this->str[i];

for (int ii = this->length, j = 0; ii <= sz; ii++, j++)

ts[ii] = rhs.str[j];

MyString a(ts, sz);

return a;

}

void GetStrPtr()

{

cout << &this->str;

}

};

int main(int argc, char** argv) {

MyString s1;

s1.display();

cout << endl;

MyString s2;

s2.display();

cout << endl;

s1 += s2;

s1.display();

cout << endl;

s2.display();

cout << endl;

s1.NewStr();

s1.display();

cout << endl;

s2 = s2 + s1;

s2.display();

cout << endl;

s2.NewStr();

s2.display();

cout << endl;

s1.GetStrPtr();

cout << endl;

s2.GetStrPtr();

cin.get();

return 0;

}

Москва 2020