c++ stringstream code example

Example 1: convert string to stream c++

// stringstream::str
#include <string>       // std::string
#include <iostream>     // std::cout
#include <sstream>      // std::stringstream, std::stringbuf

int main () {
  std::stringstream ss;
  ss.str ("Example string");
  std::string s = ss.str();
  std::cout << s << '\n';
  return 0;
}

Example 2: stringstream in c++

- A stringstream associates a string object with a stream allowing 
you to read from the string as if it were a stream (like cin).
- Method:
 clear() — to clear the stream
 str() — to get and set string object whose content is present in stream.
 operator << — add a string to the stringstream object.
 operator >> — read something from the stringstream object,

Example 3: c++ string to stream

// EXAMPLE
ostringstream ssTextAsStream("This is part of the stream."); // declare ostringstream
string sTextAsString = ssTextAsStream.str(); // converted to string
cout << sTextAsString << "\n"; // printed out

/* SYNTAX
<YourStringStream>.str()
*/

/* HEADERS
#include <iostream>
#include <sstream>
using namespace std;
*/

Example 4: stringstream in c++

std::stringstream os;
os << "12345 67.89"; // insert a string of numbers into the stream

std::string strValue;
os >> strValue;

std::string strValue2;
os >> strValue2;

// print the numbers separated by a dash
std::cout << strValue << " - " << strValue2 << std::endl;

Example 5: C++ ss

stringstream ss;

string numberStr = "654321";
int num;
ss << numberStr; 
ss >> num;

cout << "str type:" << numberStr <<endl;
cout << "convert to num:" << num <<endl;