C++ 实例练习-替换原生数组

C++ 实例练习-替换原生数组

main.cpp

#include <stdio.h>
#include "intarray.h"

int main(int argc, char *argv[])
{
    int pra = 2;
    IntArray a(5);
    a.length();
    a.get(pra , 3);
    return 0;
}

IntArray.cpp

#include "intarray.h"
#include <iostream>
using namespace  std;
IntArray::IntArray(int len){
    Pointer_1 = new int[len];
    length_1 = len;
    for(int i = 0; i< len; i++){
        Pointer_1[i] = i+1;
        cout << Pointer_1[i] <<endl;
    }
}

int IntArray::length(){
    cout << "length:" << length_1 <<endl;
    return length_1;
}

bool IntArray::get(int& pra , int i){
    if ((i > length_1)&& ( i < 0 )){
            return false;
}
    else {
            pra = Pointer_1[i];
            cout <<" i :" << pra <<endl;
}
}

bool IntArray::set(int pra_1, int setPra){
    if ((pra_1 > length_1)&& ( pra_1 < 0 )){
                    return false;
}
        else {
        Pointer_1[pra_1] = setPra;
}
    for(int i = 0; i< length_1; length_1++)
    {
        cout << Pointer_1[i] <<endl;
    }
}

void IntArray::free()
{
    delete[] Pointer_1;
}

IntArray.h

#ifndef INTARRAY_H
#define INTARRAY_H

class IntArray
{
public:
    IntArray(int len);
    int length();
    bool get(int& pra , int i);
    bool set(int pra_1, int setPra);
    void free();
private:
    int * Pointer_1;
    int length_1;
};
#endif // INTARRAY_H