C++中vector容器的初步注意事项

#include 
using namespace std;
#include 
#include 
int main()
{
	system("color f5");
	vector a={1,2,3,4,5,6,7,8,9};
	vector b={"cm","Cm","cM","CM"};
	//c容器里面有10个-1
	vector c(10,-1); 
	vector d(5,"a");            
	//可以把vector容器当成数组去进行理解  
	for(int i = 0;i<=8;i++)
	{
		cout << a[i] << " ";
	}
	for(int i = 0;i<=3;i++)
	{
		cout << b[i] << " ";
	}
	for(int i = 0;i<=9;i++)
	{
		cout << c[i] << " ";
	}
	for(int i = 0;i<=4;i++)
	{
		cout << d[i] << " ";
	}
	system("pause");
 	return 0;
}

2.vector容器圆括号与花括号的区别

#include 
using namespace std;
#include 
#include 
int main()
{
	system("color f5");
	vector v1(10);
	vector v2{10};
	vector v3={10,1};
//	for (int i = 0; i <= 9; i++) {
//		cout << v1[i] <<" ";
//	}
	cout << v2[0] << endl;
	cout << v3[0] << endl;
	cout << v3[1] << endl;
	system("pause");
 	return 0;
}

3.向vector容器中添加元素

//向vector对象中添加元素  
#include 
using namespace std;
#include 
#include 
int main()
{
	system("color f5");
	vector a;
	for (int i = 0; i <= 3; i++) {
		a.push_back(i);//如何手动的输入push_back() 
	} 
	for (int i = 0; i <= 3; i++) {
		cout << a[i] << " ";
	}
	system("pause");
 	return 0;
}

4.用户自行输入元素，应该要使用迭代器进行访问

#include 
using namespace std;
#include 
#include 
int main()
{
	system("color f5");
	string world;
	vector text;
	while ( cin >> world ) {
		text.push_back(world);
	}
	//用迭代器访问！！！！ 
	system("pause");
 	return 0;
}