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C++ Basics

Strings

string s = "Hello";
s += " World";               // join
cout << s.length() << endl;  // 11
cout << s[0] << endl;        // H
cout << s.substr(0, 5) << endl;      // Hello
cout << s.find("World") << endl;     // 6
for (char c : s) cout << c << ' ';   // loop over characters