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Выдает ошибку invalid conversion from "int*" to "int"
02.06.2013, 18:01. Показов 6634. Ответов 2
Добрый вечер!
Что за ошибка?invalid conversion from "int*" to "int"
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| #include <cstdlib>
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
inline void operator>>(const std::string &s, int &i)
{
std::istringstream ss(s);
ss >> i;
}
class Polinomials
{
public:
//------------------------------------------------------------------------------------->
Polinomials()
{
for (int i=0;i<=19;i++)
{
coeff[i]=0;
}
};
//------------------------------------------------------------------------------------->
Polinomials(string coeff_str)
{
string temp_str="";
int j=0;
int len=coeff_str.length();
for (int i=0;i<=len-1;i++)
{
if (coeff_str[i]!=',') {temp_str+=coeff_str[i];}
else
{
temp_str>>coeff[j];
j++;
temp_str="";
}
}
temp_str>>coeff[j];
j++;
for (int i=j;i<=19;i++)
{
coeff[i]=0;
}
};
//------------------------------------------------------------------------------------->
~Polinomials() {};
//------------------------------------------------------------------------------------->
int get_coeff(int n) {return coeff[n];}
int set_coeff(int n, int x) {coeff[n]=x;}
//------------------------------------------------------------------------------------->
int multy_coeff(int i, Polinomials a, Polinomials b)
{
int temp_coeff=0;
for (int j=0;j<=i;j++)
{
temp_coeff+=a.get_coeff(j)*b.get_coeff(i-j);
}
return temp_coeff;
}
//------------------------------------------------------------------------------------->
Polinomials operator * (Polinomials & rhs)
{
Polinomials temp_pol;
for (int k=0;k<=19;k++)
{
temp_pol.set_coeff(k,multy_coeff(k, *(this), rhs));
}
return temp_pol;
}
//------------------------------------------------------------------------------------->
Polinomials operator + (Polinomials & rhs)
{
Polinomials temp_pol;
for (int k=0;k<=19;k++)
{
temp_pol.set_coeff(k, coeff[k]+rhs.get_coeff(k));
}
return temp_pol;
}
//------------------------------------------------------------------------------------->
Polinomials operator - (Polinomials & rhs)
{
Polinomials temp_pol;
for (int k=0;k<=19;k++)
{
temp_pol.set_coeff(k, coeff[k]-rhs.get_coeff(k));
}
return temp_pol;
}
//------------------------------------------------------------------------------------->
void operator += (Polinomials & rhs)
{
for (int k=0;k<=19;k++)
{
coeff[k]+=rhs.get_coeff(k);
}
}
//------------------------------------------------------------------------------------->
void operator -= (Polinomials & rhs)
{
for (int k=0;k<=19;k++)
{
coeff[k]-=rhs.get_coeff(k);
}
}
//------------------------------------------------------------------------------------->
void operator *= (Polinomials & rhs)
{
Polinomials temp_pol=*(this)*rhs;
*(this)=temp_pol;
}
//------------------------------------------------------------------------------------->
void show()
{
int first=1;
if (coeff[0]!=0) {cout<<coeff[0]; first=0;}
for (int i=1;i<=19;i++)
{
if (coeff[i]!=0)
{
if (first==1) cout<<coeff[i]<<"x"<<i;
else
{
if (coeff[i]>0) cout<<"+"<<coeff[i]<<"x"<<i;
else cout<<coeff[i]<<"x"<<i;
}
first=0;
}
}
}
//------------------------------------------------------------------------------------->
int get_sum_coeff()
{
int sum_coeff=0;
for (int i=0;i<=19;i++) sum_coeff+=coeff[i];
return sum_coeff;
}
private:
int coeff[20];
};
int main(int argc, char *argv[])
{
Polinomials one("-1,1");
Polinomials two("5,4");
Polinomials three=one*two;
three.show();
cout<<"\n\n";
one*=two;
one.show();
cout<<"\n\n";
cout<<two.get_sum_coeff();
getchar();
return 0;
}
int PolynomDerivative(const int* a, size_t n)
{
int* da = new int[n - 1];
for (size_t i = 0; i < n - 1; ++i)
da[i] = (i + 1) * a[i];
return da;
} |
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