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insertsvar.cpp

来源: String 类和标准模板库

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原始代码预览

// inserts.cpp -- copy() and insert iterators
#include <iostream>
#include <string>
#include <iterator>
#include <vector>
#include <algorithm>

void output(const std::string & s) {std::cout << s << " ";};
void outc(char ch) {std::cout << ch; }
void routput(const std::string & s) {std::for_each(s.rbegin(),s.rend(),outc); std::cout << " ";}

int main()
{
    using namespace std;
    string s1[4] = {"fine", "fish", "fashion", "fate"};
    string s2[2] = {"busy", "bats"};
    string s3[2] = {"silly", "singers"};
    vector<string> words(4);
    copy(s1, s1 + 4, words.begin());
	for_each(words.begin(), words.end(), output);
	cout << endl;
 
// construct anonymous back_insert_iterator object
    copy(s2, s2 + 2, back_insert_iterator<vector<string> >(words));
	for_each(words.begin(), words.end(), output);
    cout << endl;

// construct anonymous insert_iterator object
    copy(s3, s3 + 2, insert_iterator<vector<string> >(words, words.begin()));
	for_each(words.begin(), words.end(), output);
	cout << endl;
	for_each(words.begin(), words.end(), routput);
    cout << endl;
	// cin.get();
    return 0; 
}
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