'='AND'!='运算符重载问题 [英] '=' AND '!=' operator overloading problem
问题描述
好吧,我的邪恶编译器不断拒绝我的'='AND'!='重载运算符(我认为)我的多项式和Rational类。非常感谢您的帮助。
Okay, my evil compiler keeps rejecting my '=' AND '!=' overloaded operators for (I think) both my Polynomial and Rational classes. Help is greatly appreciated.
using namespace std;
class Polynomial
{
public:
//constructor
Polynomial()
{
for ( int i = 0; i < 100; i++ )
{
coefficient[i] = 0;
}
}
~Polynomial(){}
void polynomialSet ( Rational a , int b ) //polynomialSetter function
{
coefficient[b] = a;
exponent = b;
}
. . . .
const Polynomial &Polynomial::operator=(const Polynomial &a)
{
if (&a == this)
return *this;
}
bool Polynomial::operator!=(Polynomial &a)
{
return !(*this == a);
}
***************************************************************************
using namespace std;
class Rational {
public:
//constructors
Rational (int a, int b)
{
//Rational( const int &a, const int &b){
if (a != 0)
{
if (b != 0)
{
this->numerator = a;
this->denominator = b;
}
}
}
Rational(){}
~Rational() {}
. . . .
bool Rational::operator!=(Rational a)
{
return (a.numerator != numerator) && (a.denominator != denominator);
}
Rational Rational::operator =(const Rational &a)
{
this->numerator = a.numerator;
this->denominator = a.denominator;
return *this;
}
这是我的3条错误消息:
Here are my 3 error messages:
Polynomial.h(35) : error C2679: binary '=' : no operator found which takes a
right-hand operand of type 'int' (or there is no acceptable conversion)
Rational.h(99): could be 'Rational Rational::operator =(const Rational &)'
while trying to match the argument list '(Rational, int)'
Polynomial.h(53) : error C2679: binary '!=' : no operator found which takes a
right-hand operand of type 'int' (or there is no acceptable conversion)
Rational.h(94): could be 'bool Rational::operator !=(Rational)'
while trying to match the argument list '(Rational, int)'
Polynomial.h(63) : error C2679: binary '!=' : no operator found which takes a
right-hand operand of type 'int' (or there is no acceptable conversion)
Rational.h(94): could be 'bool Rational::operator !=(Rational)'
while trying to match the argument list '(Rational, int)'
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
HELP ???
推荐答案
尝试阅读错误讯息? / p>
Try reading the error messages?
binary '=' .... right-hand operand of type 'int' .... while trying to match the argument list '(Rational, int)'
$ c> Rational& 或者一个多项式&
但是没有一个int。也就是说,您的问题中显然缺少一些信息。
Both operator = implementations that I can see take a Rational&
or a Polynomial&
but none take an int. That being said there is clearly some information missing from your question.
binary '!=' .... right-hand operand of type 'int' .... hile trying to match the argument list '(Rational, int)'
相同的问题。
除此之外, operator =
是一个赋值运算符... operator ==
是布尔等式。从我可以看到你的代码看起来像你有两个混合。单独修复这个问题会让你很快找到解决方案。
All that aside, operator =
is an assignment operator... operator ==
is Boolean equality. From what I can see of your code it looks like you have the two mixed up. Fixing that alone would set you well on your way to a solution.
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