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//program to demonstrate copy constructor in class student #include<iostream.h> #include<conio.h> #include<string.h> class student { int rollno; char name[20]; int marks; public: student() // default constructor is neccessary for copy constructor { } student(student &s) //copy constructor { rollno=s.rollno; strcpy(name,s.name); marks=s.marks; } void getdata() { cout<<"\nenter rollno "; cin>>rollno; cout<<"\nenter name "; cin>>name; cout<<"\nenter marks "; cin>>marks; } void showdata() { cout<<"\nrollno is "<<rollno; cout<<"\nname is "<<name; cout<<"\nmarks are "<<marks; } }; void main() { clrscr(); student ob; ob.getdata(); ob.showdata(); student ob1=ob; //copy constructor is called here ob1.showdata(); getch(); }