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Overloading
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Overloading in C++ advocates simplicity in usage and the readability. Therefore all
forms of the operators are overloaded to give a natural and the domain oriented meanings.
An increment operator "++" can be called in two different forms as the post fix and the
pre fix operator. Programmers do have some difficulty in overloading or using it,
as they dont know how to differentiate between them. That is why the postfix
operators are been created with the dummy parameter of a integer type.
Prefix operator "++" can be overloaded like the postfix operator without making any
change. Look at the following function definition.
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Class Test
{
int i;
public:
void operator ++()
{
++i;
}
};
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The post fix ++ operator will be overloaded with a dummy integer parameter as follows.
Class Test
{
int i;
public:
void operator ++(int)
{
i++;
}
};
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Overloading a "+" operator
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Except "?" all operators can be overloaded like ":" , "sizeof", "::", "*" . Now
let us see the example of using "+" operator.
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//C++ overloading sample
class MyString
{
public:
char member1[100];
void operator +(MyString val)
{
strcat(member1, val.member1);
}
};
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