实验4

vectorInt.hpp

#pragma once

#include<iostream>
#include<cassert>

using namespace std;

class vectorInt{
    public:
        vectorInt(int n);
        vectorInt(int n,int value);
        vectorInt(const vectorInt &vp);
        ~vectorInt();
        
        int &at(int index);
        int get_size();
        friend void output(vectorInt &T);
        
        private:
            int size;
            int *p;
};

vectorInt::vectorInt(int n) :size{n} {
cout<<"constructor 1 called.\n";
p = new int[n];
}

vectorInt::vectorInt(const vectorInt &vp) :size{vp.size} {
cout<<"copy constructor called.\n";
p=new int[size];
for(int i =0;i<size ;i++)
p[i]=vp.p[i];
} 

vectorInt::vectorInt(int n,int value) :size{n} {
cout<<"cosntructor 2 called.\n";
p = new int[size];
}

vectorInt::~vectorInt() {
    cout<<"destructor called.\n";
    delete[] p;
}

int &vectorInt::at(int index) {
    assert(index >=0 && index <size);
    return p[index];
}

int vectorInt::get_size() {
    return size;
}

void output(vectorInt &T){
    for(int i=0;i<T.get_size();i++)
    cout<<T.p[i]<<" ";
    cout<<endl;
}

main.cpp

#include <iostream>
#include "vectorInt.hpp"

void test() {
    using namespace std;

    int n;
    cin >> n;
    
    vectorInt x1(n);
    for(auto i = 0; i < n; ++i)
    {
        x1.at(i) = i*i;
    }

    output(x1);
    
    vectorInt x2(n, 42);

    vectorInt x3(x2);

    output(x2);
    output(x3);

    x2.at(0) = 77;

    output(x2);
    output(x3);
}

int main() {
    test();
}

 

 

 

Matrix.hpp

#include <iostream>
#include "matrix.hpp"

using namespace std;

void test() {
    double x[] = {1,2,3,4,5,6};
    
    Matrix m1(3,2);
    m1.set(x);
    m1.print();
    cout<<"the first line is:"<<endl;
    cout<<m1.at(0,0)<<" "<<m1.at(0,1)<<endl;
    cout<<endl;
    
    Matrix m2(2,3);
    m2.set(x);
    m2.print();
    cout<<"the first line is: "<<endl;
    cout<<m2.at(0,0)<<" "<<m2.at(0,1)<<" "<<m2.at(0,2)<<endl;
    cout<<endl;
    
    Matrix m3(m2);
    m3.set(0,0,999);
    m3.print();
}

int main(){
    test();
}
 

 

main.cpp

#include <iostream>
#include "matrix.hpp"

using namespace std;

void test() {
    double x[] = {1,2,3,4,5,6};
    
    Matrix m1(3,2);
    m1.set(x);
    m1.print();
    cout<<"the first line is:"<<endl;
    cout<<m1.at(0,0)<<" "<<m1.at(0,1)<<endl;
    cout<<endl;
    
    Matrix m2(2,3);
    m2.set(x);
    m2.print();
    cout<<"the first line is: "<<endl;
    cout<<m2.at(0,0)<<" "<<m2.at(0,1)<<" "<<m2.at(0,2)<<endl;
    couy<<endl;
    
    Matix m3(m2);
    m3.set(0,0,999);
    m3.print();
}

int main(){
    test();
}