#include <iostream>

 #include <sstream>

 struct MyStruct

 {

     std::string str1, str2, str3;

     double db;

     int num;

     char ch;

 };

 void main()

 {

     std::string mystring("china google microsoft 12.9 123 A");//创建一个字符串，用于提取

     MyStruct struct1;//创建一个结构体，用于保存结果

     std::istringstream input(mystring);//创建一个字符串扫描流

     input >> struct1.str1 >> struct1.str2 >> struct1.str3 >> struct1.db >> struct1.num >> struct1.ch;//扫描

     std::cout << struct1.str1 << std::endl;//打印

     std::cout << struct1.str2 << std::endl;

     std::cout << struct1.str3 << std::endl;

     std::cout << struct1.db << std::endl;

     std::cout << struct1.num << std::endl;

     std::cout << struct1.ch << std::endl;

     system("pause");

 }

 #include <iostream>

 #include <sstream>

 struct MyStruct

 {

     std::string str1, str2, str3;

     double db;

     int num;

     char ch;

 };

 void main()

 {

     char mystring[] = "china#google#microsoft#12.9#123#A";//创建一个字符串，用于提取

     for (char *p = mystring; *p != '\0'; p++)//查找和替换#

     {

         if (*p == '#')

         {

             *p = ' ';

         }

     }

     MyStruct struct1;//创建一个结构体，用于保存结果

     std::istringstream input(mystring);//创建一个字符串扫描流

     input >> struct1.str1 >> struct1.str2 >> struct1.str3 >> struct1.db >> struct1.num >> struct1.ch;//扫描

     std::cout << struct1.str1 << std::endl;//打印

     std::cout << struct1.str2 << std::endl;

     std::cout << struct1.str3 << std::endl;

     std::cout << struct1.db << std::endl;

     std::cout << struct1.num << std::endl;

     std::cout << struct1.ch << std::endl;

     system("pause");

 }

 #include <iostream>

 #include <sstream>

 void main()

 {

     std::stringstream mystr;//字符串进行输入

     char cmd1[] = {  };//创建字符串

     char cmd2[] = {  };//创建字符串

     std::cin.getline(cmd1, ).getline(cmd2, );//字符串赋值

     mystr << cmd1 << '&' << cmd2;//输出到mystr

     std::string str = mystr.str();//转换

     system(str.c_str());//执行

     system("pause");

 }