{

// stringstream use

int a{5}, b{6};

int sum = a + b;

std::stringstream ss;

ss << "Sum of " << a << " & " << b << " is :" << sum << std::endl;

std::string s = ss.str();

std::cout << s << std::endl;

ss.str("");

ss << sum; // convert int to stringstream

auto ssum = std::to_string(sum); // int to string

std::cout << "ssum is " << ssum << ", ss is " << ss.str() << std::endl;

std::string data = "12 89 21";

a = 0;

std::stringstream ss_ints;

ss_ints.str(data);

while (ss_ints >> a)

{

std::cout << a << std::endl;

}

int x = std::stoi("54");

// string as input

std::string first;

std::string last;

std::cout << "Enter FName ";

std::getline(std::cin, first);

std::cout << "\nEnter LName ";

std::getline(std::cin, last);

std::string fullname = first + " " + last;

std::cout << fullname;

// usig literals

using namespace std::string_literals;

auto sname = "Gracie Singh"s; // s in the end is literal

unsigned int value = 100u; // u is literal

sname.insert(7, "Kumar ");

std::cout << "\n"

<< sname;

sname.erase(7, 6); // sname.clear();

std::cout << "\n"

<< sname << "\n";

for (auto &ch : sname)

std::cout << ch;

// Search

auto pos = sname.find("Singh", 0);

if (pos != std::string::npos)

{

// Found

std::cout << "\nFound at, " << pos << " " << sname.substr(pos);

}

return 0;

/*

}