c语言:malloc - free
c++:malloc - free and new - delete
代码(已通过编译):
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cstring>
#include <string>
#include <algorithm>
#include <vector>
#include <deque>
#include <list>
#include <utility>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <bitset>
#include <iterator>
using namespace std;
typedef long long ll;
const int inf = 0x3f3f3f3f;
const ll INF = 0x3f3f3f3f3f3f3f3f;
const double PI = acos(-1.0);
const double E = exp(1.0);
const int MOD = 1e9+7;
const int MAX = 1e5+5;
int main()
{
/*
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
*/
/** C语言/C++ */
/* 一维数组:malloc - free
int * p;
int len = 10;// 数组长度
p = (int *)malloc(len * sizeof(int));
free(p);
*/
/* 二维数组:
int **p;
int row = 3; int col = 3;
p = (int **)malloc(row * sizeof(int*));
for(int i = 0; i < row; i++)
{
p[i] = (int *)malloc(col * sizeof(int));
}
for(int i = 0; i < row; i++)
{
free(p[i]);
}
free(p);
*/
/** C++ */
/* 一维数组:new - delete
int * p;
int len = 10;
p = new int[len];
delete []p;
*/
/* 二维数组:new - delete
int ** p;
int row = 3; int col = 3;
p = new int*[row];
for(int i = 0; i < row; i++)
{
p[i] = new int[col];
}
delete []p;
*/
return 0;
}