C++中stringstream的用法和实例

#include<iostream> 
#include <sstream>  
using namespace std;<pre name="code" class="cpp">int main(){ 
  string test = "-123 9.87 welcome to, 989, test!"; 
  istringstream iss;//istringstream提供读 string 的功能 
  iss.str(test);//将 string 类型的 test 复制给 iss，返回 void  
  string s; 
  cout << "按照空格读取字符串:" << endl; 
  while (iss >> s){ 
    cout << s << endl;//按空格读取string 
  } 
  cout << "*********************" << endl; 
 
  istringstream strm(test);  
  //创建存储 test 的副本的 stringstream 对象 
  int i; 
  float f; 
  char c; 
  char buff[1024]; 
 
  strm >> i; 
  cout <<"读取int类型："<< i << endl; 
  strm >> f; 
  cout <<"读取float类型："<<f << endl; 
  strm >> c; 
  cout <<"读取char类型："<< c << endl; 
  strm >> buff; 
  cout <<"读取buffer类型："<< buff << endl; 
  strm.ignore(100, ','); 
  int j; 
  strm >> j; 
  cout <<"忽略‘，'读取int类型："<< j << endl; 
 
  system("pause"); 
  return 0; 
} 

int main(){ 
  ostringstream out; 
  out.put('t');//插入字符 
  out.put('e'); 
  out << "st"; 
  string res = out.str();//提取字符串； 
  cout << res << endl; 
  system("pause"); 
  return 0; 
}