C++ 实例练习-替换原生数组C++ 实例练习-替换原生数组

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概述

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