C++ /C動態開闢I行J列的動態數組 並釋放空間

C語言實現

	int row;
	int col;
	scanf_s("%d", &row);
	scanf_s("%d", &col);

	int** p = (int**)malloc(sizeof(int) * row);
	printf_s("創建二維數組~\n");

	for (int i = 0; i < row; ++i)
	{
		p[i] = (int*)malloc(sizeof(int) * col);
		printf_s("創建一維數組 %d\n", i);
	}

	for (int j = 0; j < row; j++)
	{
		free(p[j]);
		printf_s("釋放一維數組%d\n", j);
	}
	free(p);
	printf_s("釋放二維數組\n");

	return 0;

C++ 實現

#include<iostream>

using namespace std;

int main()
{
	int row;
	int col;

	cin >> row;
	cin >> col;

	int** p = new int* [row];
	for (int i = 0; i < row; ++i)
	{
		p[i] = new int[col];
		cout << "新建一維數組:  " << i << "其中有" << col << "個元素" <<endl;
	}

	for (int j = 0; j < col; ++j)
	{
		delete[] p[j];
		cout << "刪除第" << j << "列元素" << endl;
	}
	delete[] p;
	cout << "刪除整個表" << endl;
	return 0;
}