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1 - 4 Turbo C++ 3.0
5 - 8 Borland C++ 5.02.
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struct date //
{int month,day,year; // : , ,
void set(int,int,int); // -
void get(int*,int*,int*); // -
void next(); // -
void print(); // -
};
struct class complex //
{double re,im;
double real(){return(re);}
double imag(){return(im);}
void set(double x,double y){re = x; im = y;}
void print(){cout<<re = <<re; cout<<im = <<im;}
};
' ( ) :
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'_ '_';
date today,my_birthday;
date *point = &today; // ' date
date clim[30]; // '
date &name = my_birthday; // '
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'_'. '_
'_'. '_
:
complex x1,x2;
x1.re = 1.24;
x1.im = 2.3;
x2.set(5.1,1.7);
x1.print();
'
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complex *point = &x1; // point = new complex;
point >re = 1.24;
point >im = 2.3;
point >print();
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class complex
{
double re, im; // private
public:
double real(){return re;}
double imag(){return im;}
void set(double x,double y){re = x; im = y;}
};
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omplex(double re1 = 0.0,double im1 = 0.0){re = re1; im = im1;}
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complex ss(5.9,0.15);
' :
complex ss = complex(5.9,0.15);
' . , . . .
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class CLASS_A
{
int i; float e; char c;
public:
CLASS_A(int ii,float ee,char cc): i(8),e(i * ee + ii),(){}
...
};
.
#include <string.h>
#include <iostream.h>
class string
{
char *ch; //
int len; //
public:
//
// '
string(int N = 80): len(0){ch = new char[N+1]; ch[0] = '\0';}
// '
string(const char *arch){len = strlen(arch);
ch = new char[len+1];
strcpy(ch,arch);}
// -
//
int& len_str(void){return len;}
//
char *str(void){return ch;}
...};
string , .
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string(const string& st)
{len=strlen(st.len);
ch=new char[len+1];
strcpy(ch,st.ch); }
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class demo{
int x;
public:
demo(){x=0;}
demo(int i){x=i;}
};
void main(){
class demo a[20]; // ( )
class demo b[2]={demo(10),demo(100)};//
.
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string *p=new string();
delete p;
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double(complex::*ptcom)(); //
ptcom = &complex:: real; //
// '
complex A(5.2,2.7);
cout<<(A.*ptcom)();
typedef double&(complex::*PF)();
PF ptcom=&complex::real;
.
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1. .
const int LNAME=25;
class STUDENT{
char name[LNAME]; // '
int age; //
float grade; //
public:
STUDENT(); //
STUDENT(char*,int,float); //
STUDENT(const STUDENT&); //
~STUDENT();
char * GetName();
int GetAge() const;
float GetGrade() const;
void SetName(char*);
void SetAge(int);
void SetGrade(float);
void Set(char*,int,float);
void Show(); };
name : char* name. - .
2. .
STUDENT::STUDENT(char*NAME,int AGE,float GRADE)
{
strcpy(name,NAME); age=AGE; grade=GRADE;
cout<<\n ' <<this<<endl;
}
3. . , :
) ' '
STUDENT a(,19,50), b=a;
) '
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void View(STUDENT a){a.Show;}
) ' ,
STUDENT NoName(STUDENT & student)
{STUDENT temp(student);
temp.SetName(NoName);
return temp;}
STUDENT c=NoName(a);
4. ' , ', '.
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) '
STUDENT gruppa[3];
gruppa[0].Set(,19,50);
..
STUDENT gruppa[3]={STUDENT(,19,50),
STUDENT(,18,25.5),
STUDENT(,18,45.5)};
) '
STUDENT *p;
p=new STUDENT[3];
p-> Set(,19,50);
..
5.
void (STUDENT::*pf)();
pf=&STUDENT::Show;
(p[1].*pf)();
6.
* h-
* cpp-
* pp-
-
#ifndef STUDENTH
#define STUDENTH
// STUDENT.H
...
#endif
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| - int(bool) | int | - int |
| 4.в | 5.˲ | 6. |
| '- char* | '- char* | ' -char* |
| char* | char* | - int |
| - int | - float | - int |
| 7. | 8. | 9.ֲ |
| '- char* | '- char* | - int |
| - char* | - int | - int |
| - int | - float | - float |
| 10. | 11. | 12. |
| '- char* | '- char* | -char* |
| char* | int | - int |
| - int | - int(bool) | - float |
| 13. | 14. | 15. |
| '- char* | '- char* | '-char* |
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#include <iostream.h>
class TPoint
{
double x,y;
static int N; // - :
public:
TPoint(double x1 = 0.0,double y1 = 0.0){N++; x = x1; y = y1;}
static int& count(){return N;} // -
|
|
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};
int TPoint:: N = 0; // -
void main (void)
{TPoint A(1.0,2.0);
TPoint B(4.0,5.0);
TPoint C(7.0,8.0);
cout<<\n <<TPoint:: count()<<.; }
this
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class Basis
{ int a,b;
public:
Basis(int x,int y){a=x;b=y;}
};
class Inherit:public Basis
{int sum;
public:
Inherit(int x,int y, int s):Basis(x,y){sum=s;}
};
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class base
{
public:
virtual void print(){cout<<\nbase;}
...
};
class dir: public base
{
public:
void print(){cout<<\ndir;}
};
void main ()
{
base B,*bp = &B;
dir D,*dp = &D;
base *p = &D;
bp >print(); // base
dp >print(); // dir
p >print(); // dir
}
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class Base{
public:
Base(); //
Base(const Base&); //
virtual ~Base(); //
virtual void Show()=0; //
//
protected: //
private:
// ,
};
class Derived: virtual public Base{
public:
Derived(); //
Derived(const Derived&); //
Derived(); //
virtual ~Derived(); //
void Show(); //
//
//
protected:
// private,
private:
//
};
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static void print(void); //
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