C++ 实例练习-替换原生数组

C++ 实例练习-替换原生数组

main.cpp

 1 #include <stdio.h>
 2 #include "intarray.h"
 3 
 4 int main(int argc, char *argv[])
 5 {
 6     int pra = 2;
 7     IntArray a(5);
 8     a.length();
 9     a.get(pra , 3);
10     return 0;
11 }

IntArray.cpp

 1 #include "intarray.h"
 2 #include <iostream>
 3 using namespace  std;
 4 IntArray::IntArray(int len){
 5     Pointer_1 = new int[len];
 6     length_1 = len;
 7     for(int i = 0; i< len; i++){
 8         Pointer_1[i] = i+1;
 9         cout << Pointer_1[i] <<endl;
10     }
11 }
12 
13 int IntArray::length(){
14     cout << "length:" << length_1 <<endl;
15     return length_1;
16 }
17 
18 bool IntArray::get(int& pra , int i){
19     if ((i > length_1)&& ( i < 0 )){
20             return false;
21 }
22     else {
23             pra = Pointer_1[i];
24             cout <<" i :" << pra <<endl;
25 }
26 }
27 
28 bool IntArray::set(int pra_1, int setPra){
29     if ((pra_1 > length_1)&& ( pra_1 < 0 )){
30                     return false;
31 }
32         else {
33         Pointer_1[pra_1] = setPra;
34 }
35     for(int i = 0; i< length_1; length_1++)
36     {
37         cout << Pointer_1[i] <<endl;
38     }
39 }
40 
41 void IntArray::free()
42 {
43     delete[] Pointer_1;
44 }

 

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

 

posted @ 2018-12-12 11:08  lemaden  阅读(367)  评论(0)  编辑  收藏  举报