std::string temp = "hello whats up";

string s("hello");
cout << s.size() << ' ';
s[1] = '';
cout << s.size() << 'n';

std::string temp = "hello whats up";

std::string s1 = "abcd";   // s1 contains "ab",       using string literal
std::string s2{"abcd", 6}; // s2 contains "abcd", using different ctr
std::string s3 = "abcd"s;  // s3 contains "abcd", using ""s operator