OOP vector addition and subtraction (friend + copy construction)

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Title Description

AC Code

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Title Description

Define a CVector The categories are as follows ：

class CVector

{

private:

    int *data; // Storage n Dimension vector

    int n;     // Vector dimension

public:

    CVector(int n1, int *a);

    CVector(CVector &c);

    ~CVector() { delete data; }

    void print();

    friend CVector Add(const CVector V1, const CVector V2);

    friend CVector Sub(const CVector V1, const CVector V2);

};

Requirements are as follows ：

Based on input and output CVector class , And implement friend functions respectively Add、Sub To add and subtract two vectors .

Input

first line , Enter the number of tests t

The format of each group of test data is as follows :

Vector dimension n

first n Dimension vector values

the second n Dimension vector values

Output

For each group of test data , Output the results of their addition and subtraction

sample input 1

2
3
1 2 3
4 5 6
5
1 2 3 4 5
-1 2 4 6 10

sample output 1

5 7 9
-3 -3 -3
0 4 7 10 15
2 0 -1 -2 -5

AC Code

#include<iostream>
#include<string>
#include<algorithm>
#include<cmath>
#include<iomanip>
using namespace std;
class CVector {
	private:
		int *data; // Storage n Dimension vector 
		int n;     // Vector dimension 
	public:
		CVector(int n1, int *a);
		CVector(const CVector &c);
		~CVector() {
			delete data;
		}
		void print();
		friend CVector Add(const CVector V1, const CVector V2);
		friend CVector Sub(const CVector V1, const CVector V2);
};
CVector::CVector(int n1,int *a){
	n=n1;
	data=new int[n1];
	for(int i=0;i<n1;i++)
	data[i]=a[i];
}
CVector::CVector(const CVector &c){
	n=c.n;
	data=new int[c.n];
	for(int i=0;i<c.n;i++)
	data[i]=c.data[i];
}
void CVector::print(){
	for(int i=0;i<n-1;i++)
	cout<<data[i]<<' ';
	cout<<data[n-1]<<endl;
}
CVector Add(const CVector V1, const CVector V2){
	CVector temp(V1);
	for(int i=0;i<temp.n;i++)
	temp.data[i]=V1.data[i]+V2.data[i];
	return temp;
}
CVector Sub(const CVector V1, const CVector V2){
	CVector temp(V1);
	for(int i=0;i<temp.n;i++)
	temp.data[i]=V1.data[i]-V2.data[i];
	return temp;
}
int main() {
	int t,n,i;
	cin>>t;
	while(t--){
		cin>>n;
		int *p=new int [n];
		for(i=0;i<n;i++)
		cin>>p[i];
		CVector a(n,p);
		for(i=0;i<n;i++)
		cin>>p[i];
		CVector b(n,p);	
		Add(a,b).print();
		Sub(a,b).print();
		delete[] p;
	}
}