vu cs302 Mid Term Subjective Solved Past Paper No.1
vu cs302 Digital Logic Design Solved Past Papers
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Accessor functions are used to access private data of the object, we provide accessor functions to get and set private data members of the class.
Example
class Student{…
int rollNo;
public:
void setRollNo(int aRollNo){
rollNo = aRollNo;
}
};
Avoiding Error
void Student::setRollNo(int aRollNo){
if(aRollNo < 0){
rollNo = 0;
}(Page93)
Binary Operators Overloading
Binary operators act on two quantities.
Examples of binary operators:
overloading + operator:class Complex{
private:
double real, img;
public:
…
Complex operator +(const Complex & rhs);
};
Complex Complex::operator +( const Complex & rhs){
Complex t;
t.real = real + rhs.real;
t.img = img + rhs.img;
return t;
}
An object may be composed of other smaller objects, the relationship between the "part" objects and the "whole" object is known as Composition, and Composition is represented by a line with a filled-diamond head towards the composer object. For example a man and his body parts have the relation of "part" objects and the "whole" object is known as Composition of man. (Page 52)
