#include <iostream>
#include <vector>
#include <iterator>
using namespace std;
int main()
{
int src[]={1,2,3,4,5,6,7};
//vector<int> srcVec;
//srcVec.resize(7);
vector<int> srcVec(src,src+7); //注意!7为长度
ostream_iterator<int> ofile(cout," ");
//将数值复制到vector里,参数依次是开始,结束,vector数组的开始
//(看起来src+7越界了)src+7,表示结束,srcVec.end()相当于src+7
copy(src,src+7,srcVec.begin());
cout<<"srcVec contains:\n";
//将数值复制到输出流中,参数依次是开始,结束,输出流
copy(srcVec.begin(),srcVec.end(),ofile);
cout<<endl;
//将数组向左移动两位
copy(src+2,src+7,src);
cout<<"shifting array sequence left by 2"<<endl;
copy(src,src+7,ofile);
cout<<endl;
//另一种方法,注意观察copy()中第二个参数
//srcVec.end()相当于src+7
//将数组向左移动两位
copy(srcVec.begin()+2,srcVec.end(),srcVec.begin());
cout<<"shifting array sequence left by 2"<<endl;
copy(srcVec.begin(),srcVec.end(),ofile);
cout<<endl;
return 0;
}
STL copy()函数用法