c++学习练习

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1、创建string文本：

sdsd haha hehe alala xixi hehe sdsfddf haha ninin

练习程序：

#include <iostream>#include <algorithm>#include <vector>#include <string>#include <fstream>#include <sstream>#include <list>#include <cstdlib>using namespace std;bool isshorter(const string& s1, const string& s2);int main(int argc, char *argv[]){list<string> ilist;list<string>::iterator ite;vector<string> vec;vector<string>::iterator vte;    ifstream infile("./string", ifstream::in);if(!infile){perror("read file error");}string s,sword;while(getline(infile, s)){istringstream istring(s);while(istring >> sword){ilist.push_back(sword);}}vec.assign(ilist.begin(), ilist.end());for(ite = ilist.begin(); ite != ilist.end(); ++ite){cout << *ite << endl;}cout << "----------------" << endl;ilist.sort();for(ite = ilist.begin(); ite != ilist.end(); ++ite){cout << *ite << endl;}    ilist.unique();cout << "----------------" << endl;for(ite = ilist.begin(); ite != ilist.end(); ++ite){cout << *ite << endl;}    cout << ilist.size() << endl;  cout << "++++++++++++++++++++++++++++++" <<endl;sort(vec.begin(), vec.end());for(vte = vec.begin(); vte != vec.end(); ++vte){cout << *vte << endl;}cout << "----------------" << endl;stable_sort(vec.begin(), vec.end(), isshorter);for(vte = vec.begin(); vte != vec.end(); ++vte){cout << *vte << endl;}cout << "----------------" << endl;vte = unique(vec.begin(), vec.end());vec.erase(vte, vec.end());for(vte = vec.begin(); vte != vec.end(); ++vte){cout << *vte << endl;}cout << "----------------" << endl;    return 0;}bool isshorter(const string& s1, const string& s2){return s1.size() > s2.size(); }

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