Copy constructor

#1

sir in the oops 5 video , sir has made three car function in car class with
car()
car(float p, int m, char * n)
car(int p)
then sir told about copy constructor as car e(d) for copying all data of d in e , but my doubt is when e has one parameter then why car (int p) is not used for e by taking d as a parameter for e .

#2

d is a car or a parameter? if d is a car, then sir has shown you working of copy constructor. If we don’t define our own copy constructor, the C++ compiler creates a default copy constructor for each class which does a member-wise copy between objects

#3

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