1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
#include <iostream>
#include <conio.h>
#include <cmath>
using namespace std;
class Polynomial{
int degree;
char var;
double *coeff;
public:
explicit Polynomial(int n,char c): degree(n), var(c), coeff(new double[n]) {};
~Polynomial(){delete[] coeff;}
Polynomial(const Polynomial &p);
Polynomial &operator =(const Polynomial &p);
double operator [](int i) const;
double &operator [](int i);
double operator ()(double n);
friend const Polynomial operator +(const Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator -(const Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator *(const Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator /(const Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator %(const Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator +=(Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator -=(Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator *=(Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator /=(Polynomial &p1,const Polynomial &p2);
friend const Polynomial operator %=(Polynomial &p1,const Polynomial &p2);
friend ostream &operator <<(ostream &cout,const Polynomial &p);
friend bool operator ==(const Polynomial &p1,const Polynomial &p2);
friend bool operator !=(const Polynomial &p1,const Polynomial &p2);
};
double Polynomial::operator [](int i) const{
if(i<1 || i>degree) throw "Wrong index!";
return coeff[i];
};
double &Polynomial::operator [](int i){
if(i<1 || i>degree) throw "Wrong index!";
return coeff[i];
};
double Polynomial::operator ()(double n){
double sum(0);
for(int i=0;i<degree+1;i++)sum+=coeff[i]*pow(sum,i);
};
const Polynomial operator +(const Polynomial &p1,const Polynomial &p2){
if(p1.var == p2.var){
int degree3(0);
if(p1.degree<p2.degree) degree3 = p2.degree;
if(p1.degree>p2.degree) degree3 = p1.degree;
Polynomial p3(degree3,p1.var);
p3.coeff = new double [p3.degree];
for(int i=0;i<p3.degree;i++) p3.coeff[i]=0;
for(int i=0;i<p3.degree;i++) p3.coeff[i]=p1.coeff[i]+p2.coeff[i];
return p3;
}
else throw "These polynomials dont have the same variables.";
};
Polynomial::Polynomial(const Polynomial &p){
degree = p.degree; var = p.var;
coeff = new double[degree];
for(int i=0;i<degree;i++) p.coeff[i]=0;
copy(p.coeff,p.coeff + p.degree,coeff);
};
Polynomial &Polynomial::operator =(const Polynomial &p){
if(degree<p.degree || degree>p.degree) throw "Polynomiali nisu istog degreea.";
degree=p.degree; var=p.var;
coeff=new double[degree];
for(int i=0;i<p.degree;i++) p.coeff[i]=0;
copy(p.coeff,p.coeff + p.degree,coeff);
};
ostream &operator <<(ostream &cout,const Polynomial &p){
cout<<p.coeff[0]<<" + "<<p.coeff[1]<<"*"<<p.var;
for(int i=2;i<p.degree-1;i++)
cout<<" + "<<*(p.coeff+i)<<"*"<<p.var<<"^"<<i;
return cout<<" + "<<*(p.coeff + p.degree);
};
int main(){
Polynomial p(2,'x');
p[1]=2;p[2]=3;
Polynomial q(2,'x');
p[1]=3; p[2]=4;
cout<<p+q;
getch();
return 0;
}
|
