How extract element from frame in c++11

[chrichri]

I try to write a code which one extract the element eg: "\ndata1:gdfste\ndata2:abcdfe\ndata3:wertqw"
affich data1 = gdfste
data2 = abcdfe
data3 = wertqw
Just now i write this line
Please Do you have some proposition
Thank's advance !

string tmp =  "\ndata1:gdfste\ndata2:abcdfe\ndata3:wertqw"

    cout << tmp << endl;
    auto p= tmp.find("data1");
    cout<< p<< endl;

    if(string::npos !=p)
    {
        p+= tmp.size();
    }

    auto p1= tmp.find_first_of('\n',p);

    if(string::npos!=p1)
    {
        cout<<"..."<< tmp.substr(p,p1-p)<< endl;
    }

  return 0;

[keskiverto]

A \n in stream is whitespace:

#include <iostream>
#include <sstream>
#include <string>

int main()
{
  std::string foo( "\ndata1:gdfste\ndata2:abcdfe\ndata3:wertqw" );
  std::istringstream bar( foo );
  std::string line;
  while ( bar >> line ) {
    std::cout << "##" << line << "##\n";
  }
}