使用istringstream给出错误|为什么 [英] Using istringstream gives error | Why

问题描述

我有一个我创建的二进制文件。在其中，数据以二进制形式存储，但是我将以人类可读的形式显示它：

  [someOtherData] 6759A_block $ [ someOtherData] 
  

我在temp_S中保存数据6759A_block $，声明为字符串。现在，我想要拆分第一个3字节远离temp_S，然后将其存储在unsigned int。要完成我的愿望，我写下面的代码段;

  unsigned int number; 
 {
 string tmp（temp_S，0，3）; 
 istringstream temp_Istream（tmp）; 
 temp_Istream>>数;然而，当我编译我的小程序时，它给出一个错误如下所示;然而，当我编译我的小程序，它给出一个错误，如下所示：。
} 
  

<

 错误：variable'std :: istringstream temp_S'具有初始化器但不完整类型
  
 
 
 
我的问题是：
 
 
 
 
 
编译器错误？
 
 
如何解决这个问题，并将前三个字节的数据转换为unsigned int？
 
 
 
 
 
编辑：
 
 
 
 
 
平台linux 
 
 
 g ++ 
 
 
 
 
解决方案
 GCC指出错误< a>当你忘记这一点：
  #include< sstream> // this is where istringstream is defined 
  
 
I have one binary file which I have created. In it, data is stored in binary form but I will show it in human readable form like ;
 [someOtherData]6759A_block$[someOtherData]
I hold that data "6759A_block$" in temp_S, which is declared as string. Now, I want split first 3 byte away from temp_S, and then store it in unsigned int. To accomplish my wish, I have write below code segment;
 unsigned int number;
 { 
 string tmp ( temp_S , 0  ,3 ); 
 istringstream temp_Istream ( tmp ) ;
 temp_Istream >> number;
 }
However, when I compile my small program, it gives an error shown below ;
error: variable ‘std::istringstream temp_S’ has initializer but incomplete type
My questions are : 



What is the meaning of this compiler error ?
how can I fix that problem, and take first three byte of data to unsigned int ?


EDIT :


platform linux
g++

解决方案
GCC gives that error when you forget this:
#include <sstream> //this is where istringstream is defined


                        
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