学步园

字符串string的主要操作，除了字符串流stringstream。同时大部分操作也适用于其它STL容器如vector、list等

 char a[] = "TELEPHONE_NUMBKER";
 string str, str1("0123456789"), str2 (a), str3 (a, a + 9),
  str4 (str3.begin () + 1, str3.end () - 2); //四种string初始化方法
 str = "Jacky56333333Shanghai"; //字符串赋值
 cout << str3 << endl << str4 << endl;

 int i = str.find_first_of (str1); //返回值相当于数组下标
 if (i != string::npos)
  cout << "First number locates in : " << i << endl;
 else
  cout << "NOT FOUND/n";

 str.insert (str.begin (), str1.begin (), str1.end ()); //插入子串
 cout << "insert:/t/t" << str << endl;

 str3 = str;
 str = str.substr (str.find_first_not_of (str1), //返回子串
  str.find_last_not_of (str1) - str.find_first_not_of (str1) + 1);
 cout << "substr From:/t" << str3
  << "/nsubstr Get:/t" << str << endl;

 string::iterator si = search (str.begin (), str.end (), str1.begin () + 5, /*查找子串指针*/ str1.begin () + 6*/str1.end () - 3);
 if (si != str.end ())
  cout << "search:/t/t"  << "FOUND String of first character : " << *si << endl;
 else
  cout << "search:/t/t" << "NOT FOUND/n";

 cout << str.find ("33") << endl; //查找子串位置

 str.replace (str.begin (), str.end (), "abc"); //替代
 cout << "replace:/t/t" << str << endl;

reverse (str.begin (), str.end ()); //翻转
 cout << "reverse:/t" << str << endl;

 sort (str.begin (), str.end ()); //排序
 cout << "sort:/t/t" << str << endl;

 str.erase (str.begin (), str.begin () + 8); //删除
 cout << "erase:/t/t" << str << endl;