标签:str amp int namespace 示例 turn 清空 space names
#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<vector<int>> A;
vector<int> B;
B.push_back(0);
B.push_back(1);
B.push_back(2);
B.push_back(3);
A.push_back(B);
//注意需要清空B
B.clear();
B.push_back(4);
B.push_back(5);
B.push_back(6);
B.push_back(7);
A.push_back(B);
cout << "============第一种索引方式============" << endl;
for (int i = 0; i < 2; i++)
{
vector<int> & p = A[i];
for (int j = 0; j < p.size(); j++)
{
cout << p[j] << " ";
}
cout << endl;
}
cout << "============第二种索引方式============" << endl;
for (int i = 0; i < A.size(); i++)
{
for (int j = 0; j < A[0].size();j++)
cout << A[i][j] << " ";
cout << endl;
}
return 0;
}
标签:str amp int namespace 示例 turn 清空 space names
原文地址:https://www.cnblogs.com/chay/p/10304485.html