C++ 向量 中的 resize()函数

v.resize(n,val);

#include<iostream>
#include<vector>
using namespace std;
int main()
{
	vector<int> v;
	for(int i=1;i<=10;i++)
	{
	v.push_back(i);
	}
	cout<<"Initial elements are :";
	for(int i=0;i<v.size();i++)
	cout<<v[i]<<" ";
	v.resize(5);
	cout<<'\n';
	cout<<"After resizing its size to 5,elements are :";
	for(int i=0;i<v.size();i++)
	cout<<v[i]<<" ";
	return 0;
}

#include<iostream>
#include<vector>
using namespace std;
int main()
{
	vector<string>  v1{"java","C","C++"};
	cout<<"Elements of v1 are :";
	for(int i=0;i<v1.size();i++)
	cout<<v1[i]<<" ";
	v1.resize(5,".Net");
	for(int i=0;i<v1.size();i++)
	cout<<v1[i]<<" ";
	return 0;
}