由於最近在看STL，關於string的操作，不例舉了，今天把自學寫的vector放上來，大家一起學習。
#include "iostream"
#include "vector"
#include "string"
#include "algorithm"
using namespace std;
int main(void)
{
string str[]={"C","C++","Linux"};
string line;
//create the vector
vector<string> v1;
vector<string> cpv1;
vector<int> v2(10);
vector<int> v3(10,0);
vector<string> v4(str+0,str+3);
//begin traversing the vector
vector<string>::iterator sIt=v4.begin();//string iterator
while(sIt!=v4.end()) //read the v4
cout<<*sIt++<<" ";
cout<<endl;
vector<string> v5(v4); //the v5 is copy v4
for(int i=0;i<3;i++)
cout<<v5[i]<<" ";
cout<<endl;
//
vector<int>::iterator iIt=v3.begin();
while(iIt!=v3.end())
cout<<*iIt++<<" ";
cout<<endl;
while(getline(cin,line))
{
if(line.empty())
break;
v1.push_back(line);//add the line end in the v1
//v1.push_front(line); //add the line begin in the v1
//v1.insert(p,line); //add the line before p
//v1.insert(p,n,line); //add n line before p
}
sIt=v1.begin();//string iterator
while(sIt!=v1.end()) //read the v1
cout<<*sIt++<<" ";
cout<<endl;
cpv1=v1;
//use insert at v1
sIt=v1.begin();
string spo("newElement");
v1.insert(v1.begin(),spo); //must use the v1.begin(),don't use the sIt
cout<<"insert begin:";
while(sIt!=v1.end())
cout<<*sIt++<<" ";
cout<<endl;
v1=cpv1;
//
sIt=v1.begin()+2;
v1.insert(sIt,spo); //here can use the v1.begin()=2 and sIt
sIt=v1.begin();
cout<<"insert begin+2:";
while(sIt!=v1.end())
cout<<*sIt++<<" ";
cout<<endl;
v1=cpv1;
//
sIt=v1.end()-1; //-1 is one before the end,but don't +1
v1.insert(sIt,3,"COPY");
sIt=v1.begin(); //must again assign the sIt,becase the begin is change
cout<<"insert 3 COPY before endl:";
while(sIt!=v1.end())
cout<<*sIt++<<" ";
cout<<endl;
v1=cpv1;
//
string sar[4]={"Test1","Test2","Test3","Test4"};
v1.insert(v1.end(),sar,sar+4);
sIt=v1.begin();
cout<<"insert all of sar before end:";
while(sIt!=v1.end())
cout<<*sIt++<<" ";
cout<<endl;
v1=cpv1;
//
sIt=v1.begin();
v1.insert(v1.begin(),sar,sar+2);
cout<<"insert same of sar before end:";
while(sIt!=v1.end())
cout<<*sIt++<<" ";
cout<<endl;
v1=cpv1;
//
//using the const_iterator traversing read the vector
//use the const_iterator because we won't change the elements
vector<string>::const_iterator iread = v1.begin();
while(iread!=v1.end())
cout<<*iread++<<" ";
cout<<endl;
//use the clear
v1.clear();
iread=v1.begin();
v1.push_back("Hello");
while(iread!=v1.end())
cout<<*iread++<<" ";
//cout<<v1.size()<<endl;
cout<<endl;
return 0;
}