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| # include <iostream>
using namespace std;
class point
{
int x, y;
public:
point(int a=0, int b=0) { x=a; y=b;}
void show_xy () { cout<<"( "<<x<<", "<<y<<")\n"; }
//operators
//binary
friend point operator+ (point a, point b);
friend point operator+ (int a, point b);
friend point operator+ (point a, int b);
friend point operator* (point a, point b);
friend point operator* (int a, point b);
friend point operator* (point a, int b);
friend point operator/ (point a, point b);
friend point operator/ (int a, point b);
friend point operator/ (point a, int b);
friend point operator- (point a, point b);
friend point operator- (int a, point b);
friend point operator- (point a, int b);
//boolean
friend int operator&& (point a, point b);
friend int operator|| (point a, point b);
// comparison
friend int operator> (point a, point b);
friend int operator< (point a, point b);
friend int operator== (point a, point b);
friend int operator!= (point a, point b);
//unary
friend point operator++ (point &a);
friend point operator++ (point &a, int notused);
friend point operator-- (point &a);
friend point operator-- (point &a, int notused);
friend point operator- (point &a);
friend point operator+ (point &a);
};
//summ
point operator+ (point a, point b){
point tmp;
tmp.x=a.x+b.x;
tmp.y=a.y+b.y;
return tmp;
}
point operator+ (point a, int b){
point tmp;
tmp.x=a.x+b;
tmp.y=a.y+b;
return tmp;
}
point operator+ (int a, point b){
point tmp;
tmp.x=a+b.x;
tmp.y=a+b.y;
return tmp;
}
//difference
point operator- (point a, point b){
point tmp;
tmp.x=a.x-b.x;
tmp.y=a.y-b.y;
return tmp;
}
point operator- (point a, int b){
point tmp;
tmp.x=a.x-b;
tmp.y=a.y-b;
return tmp;
}
point operator- (int a, point b){
point tmp;
tmp.x=a-b.x;
tmp.y=a-b.y;
return tmp;
}
//multiply
point operator* (point a, point b){
point tmp;
tmp.x=a.x*b.x;
tmp.y=a.y*b.y;
return tmp;
}
point operator* (int a, point b){
point tmp;
tmp.x=a*b.x;
tmp.y=a*b.y;
return tmp;
}
point operator* (point a, int b){
point tmp;
tmp.x=a.x*b;
tmp.y=a.y*b;
return tmp;
}
//divide
point operator/ (point a, point b){
point tmp;
tmp.x=a.x/b.x;
tmp.y=a.y/b.y;
return tmp;
}
point operator/ (int a, point b){
point tmp;
tmp.x=a/b.x;
tmp.y=a/b.y;
return tmp;
}
point operator/ (point a, int b){
point tmp;
tmp.x=a.x/b;
tmp.y=a.y/b;
return tmp;
}
//boolean
int operator&& (point a, point b){
if (a.x && b.x && a.y && b.y)
{
return 1;
} else { return 0; }
}
int operator|| (point a, point b){
if (a.x || b.x && a.y || b.y)
{
return 1;
} else { return 0; }
}
//comparison
int operator< (point a, point b){
if (a.x < b.x && a.y < b.y)
{
return 1;
} else { return 0; }
}
int operator> (point a, point b){
if (a.x > b.x && a.y > b.y)
{
return 1;
} else { return 0; }
}
int operator== (point a, point b){
if (a.x == b.x && a.y == b.y)
{
return 1;
} else { return 0; }
}
int operator!= (point a, point b){
if (a.x != b.x && a.y != b.y)
{
return 1;
} else { return 0; }
}
//unary
point operator++ (point &a){
a.x++; a.y++;
return a;
}
point operator++ (point &a, int notused){
a.x++; a.y++;
return a;
}
point operator-- (point &a){
a.x--; a.y--;
return a;
}
point operator-- (point &a, int notused){
a.x--; a.y--;
return a;
}
point operator- (point &a){
a.x=-a.x; a.y=-a.y;
return a;
}
point operator+ (point &a){
if (a.x>0 && a.y<0)
{
a.y=abs(a.y);
return a;
}
if (a.x<0 && a.y>0)
{
a.x=abs(a.x);
return a;
}
if (a.x<0 && a.y<0)
{
a.x=abs(a.x);
a.y=abs(a.y);
return a;
}
}
int main(int argc, char const *argv[])
{
point p1(3), p2(1,1), p3;
cout<<"Demo for addition:\n";
cout<<"1) p1(3,0)+p2(1,1)= ";
p3=p2+p1;
p3.show_xy();
cout<<endl<<"2) 3+p1(3,0)+5= ";
p3=3+p1+5;
p3.show_xy();
cout<<endl;
cout<<"Demo for difference:\n";
cout<<"1) p1(3,0)-p2(1,1)= ";
p3=p2-p1;
p3.show_xy();
cout<<endl<<"2) 3-p1(3,0)-1= ";
p3=3-p1-1;
p3.show_xy();
cout<<endl;
cout<<"Demo for multiplying:\n";
cout<<"1) p1(3,0)*p2(1,1)= ";
p3=p2*p1;
p3.show_xy();
cout<<endl<<"2) 3*p2(1,1)*7= ";
p3=3*p2*7;
p3.show_xy();
cout<<endl;
cout<<"Demo for division:\n";
cout<<"1) p1(3,0)/p2(1,1)= ";
p3=p2/p1;
p3.show_xy();
cout<<endl<<"2) 6*p2(1,1)/3= ";
p3=6*p2/3;
p3.show_xy();
cout<<endl;
cin.get(); cin.ignore();
return 0;
} |
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Сообщение от Dummy_1
