CHAPTER6-25.cpp
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上传日期:2007-07-03
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- //文件名:CHAPTER6-25.cpp
- #include <iostream>
- #include <vector>
- #include <string>
- #include <algorithm>
- using namespace std;
- int main()
- {
- //create empty vector for strings
- vector<string> sentence;
- //reserve memory for five elements to avoid reallocation
- sentence.reserve(5);
- //append some elements
- sentence.push_back("Hello,");
- sentence.push_back("how");
- sentence.push_back("are");
- sentence.push_back("you");
- sentence.push_back("?");
- //print elements separated with spaces
- copy (sentence.begin(), sentence.end(),
- ostream_iterator<string>(cout," "));
- cout << endl;
- //print ''technical data''
- cout << " max_size(): " << sentence.max_size() << endl;
- cout << " size(): " << sentence.size() << endl;
- cout << " capacity(): " << sentence.capacity() << endl;
- //swap second and fourth element
- swap (sentence[1], sentence [3]);
- //insert element "always" before element "?"
- sentence.insert (find(sentence.begin(),sentence.end(),"?"),"always");
- //assign "!" to the last element
- sentence.back() = "!";
- //print elements separated with spaces
- copy (sentence.begin(), sentence.end(),
- ostream_iterator<string>(cout," "));
- cout << endl;
- //print "technical data" again
- cout << " max_size(): " << sentence.max_size() << endl;
- cout << " size(): " << sentence.size() << endl;
- cout << " capacity(): " << sentence.capacity() << endl;
- }