#include <iostream>   
#include <string>  
 
using namespace std;
int main ()
{
	string pi = "pi is " + to_string(3.1415926);
  	cout<< "pi = "<< pi << endl;
 
  	cout<<"to_string is available since "+ to_string(2011) << " so use it!";
 
  	int16_t binary = std::stoi("25");
  	uint8_t icTmp = 0;
  	bool negative = false;
  	if(binary < 0) {
  		icTmp = -binary;
  		negative = true;
  	} else {
  		icTmp = binary;
  	}
 
    std::cout << "Binary: " << unsigned(icTmp) << " negative: " << (negative ? "true" : "false") << '\n';
 
  return 0;
}

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