#include <iostream>
#include <vector>
using namespace std;
void SaveNumbers(vector<int> numbers);
int main()
{
vector<int> numbers;
SaveNumbers(numbers);
cout << "FROM MAIN FUNCTION:" << endl;
for(int i = 0; i < 5; i++)
{
cout << numbers.at(i) << " ";
}
cout << endl;
return 0;
}
void SaveNumbers(vector<int> numbers)
{
for(int i = 0; i < 5; i++)
{
numbers.push_back(i + 1);
}
cout << "FROM FUNCTION: " << endl;
for(int i = 0; i < 5; i++)
{
cout << …Run Code Online (Sandbox Code Playgroud) 我正在尝试使用 C++ 实现动态数组。但是,我的resize()功能似乎无法正常工作。没有错误或警告。我做了一些研究并尝试查看互联网上找到的其他实现,但无法解决该问题。我把我的代码放在下面。
#include <iostream>
class Array
{
private:
int* arr;
int size = 0;
int capacity = 1;
public:
Array() { arr = new int[capacity]; }
Array(int capacity)
:
capacity(capacity)
{
arr = new int[capacity];
}
int length() const { return size; }
bool is_empty() const { return (length() == 0); }
int get(int index) const { return arr[index]; }
void set(int index, int value) { arr[index] = value; }
void resize()
{
capacity *= 2;
int* …Run Code Online (Sandbox Code Playgroud) c++ class definition member-functions dynamic-memory-allocation