使用copy算法将一个文件中的写到标准输出中

#include<iostream>#include<stack>#include<string.h>#include<string>#include<map>#include<set>#include<sstream>#include<fstream>#include<iterator>#include<vector>#include<algorithm>#include<numeric>#include<list>#define N 1005using namespace std;bool cmp(const int& a,const int& b){return a>b;}void display(const int& a){cout<<a<<endl;}int main(){ostream_iterator<int> out(cout," ");//定义个流迭代器并和标准输出流绑定一起ifstream in("1.txt");istream_iterator<int> in_iter(in),eof;copy(in_iter,eof,out);//将文件中的内容写入到标准输出中。cout<<endl;in.close(); return 0;}