std::basic_istringstream::str

basic_string<char_type,traits_type,allocator_type> str() const;void str (const basic_string<char_type,traits_type,allocator_type>& s);

Get/set content

The first form (1) returns a basic_string object with a copy of the current contents of the stream.

The second form (2) sets str as the contents of the stream, discarding any previous contents. The object preserves its open mode: if this includes ios_base::ate, the writing position is moved to the end of the new sequence.

Internally, the function calls the str member of its internal string buffer object.

Parameters

str: A basic_string object with the same template parameters (charT, traits and Alloc), whose content is copied.
Member types char_type, traits_type and allocator_type are the class template parameters of basic_istringstream.

Return Value

For (1), a basic_string object with a copy of the current contents in the stream buffer.

Member types char_type, traits_type and allocator_type are the class template parameters of basic_istringstream.

Example

// istringstream::str
#include <string>       // std::string
#include <iostream>     // std::cout
#include <sstream>      // std::istringstream

int main () {
  std::istringstream iss;
  std::string strvalues = "32 240 2 1450";

  iss.str (strvalues);

  for (int n=0; n<4; n++)
  {
    int val;
    iss >> val;
    std::cout << val << '\n';
  }
  std::cout << "Finished writing the numbers in: ";
  std::cout << iss.str() << '\n';
  return 0;
}

32
240
2
1450
Finished writing the numbers in: 32 240 2 1450

Data races

Accesses (1) or modifies (2) the basic_istringstream object.
Concurrent access to the same object may cause data races.

Exception safety

Basic guarantee: if an exception is thrown, the object is in a valid state.

C++

Reference

C library:

Containers:

Input/Output:

Multi-threading:

Other:

<sstream>

class templates

classes

basic_istringstream

public member functions