C++ hiba [megoldva]
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Sziasztok!
A probléma az alábbi kódra adódik:
//==================main.cpp==================
#include <iostream>
#include "array.h"
#include <functional>
#include <list>
#include <deque>
template <class T>
class Less: public std::unary_function<T, bool>
{
T x;
public:
Less(const T& t):x(t) {}
bool operator()(const T& t) const
{
return t<x;
}
};
template <class T>
class Print
{
T s;
public:
Print():s(0) {}
void operator()(const T& a)
{
std::cout << a << ' ';
s+=a;
}
T get() const
{
return s;
}
~Print()
{
std::cout << std::endl;
}
};
int main()
{
int yourMark = 1;
Array<int, 5> ai;
Array<double, 3> ad(2.0);
const Array<char, 2> ac('a');
if ('a' == ac.at(0))
yourMark = ac.size();
const Array<double, 3> cad = ad;
ai[0] = ai[1] = ai[2] = 3;
ai[3] = ai[4] = 1;
const Array<int, 5> cai = ai;
yourMark = cai[0];
}
//==================array.h==================
#ifndef ARRAY_H
#define ARRAY_H
#include <vector>
template<typename T, int x>
class Array
{
public:
Array() {tomb.reserve(x);};
Array(T e)
{
tomb.reserve(x);
for(int i=0; i<x; i++)
{
tomb[i]=e;
}
}
T at(int h) const
{
return tomb[h];
}
int size() const
{
return x;
}
Array& operator=(const Array& sName)
{
if ( this == &sName )
return *this;
Clear();
CopyFrom( sName );
return *this;
}
void Clear()
{
for(int i=0; i<x; i++ )
{
tomb.pop_back();
}
}
void CopyFrom( const Array& sName )
{
for(int i=0; i<sName.size(); i++)
{
this.push_back(sName[i]);
}
}
T& operator[](int y) const { return tomb[y]; }
private:
std::vector<T> tomb;
};
#endif
A hiba pedig ez:
array.h: In member function `T& Array::operator[](int) const [with T = int, int x = 5]':
main.cpp:53: instantiated from here
array.h:55: error: invalid initialization of reference of type 'int&' from expression of type 'const int'
- Tovább (C++ hiba [megoldva])
- 1475 megtekintés