C++ string initialization

string s0;                                       // s0 = “”
string s1(“Hello”);                               // s1 = “Hello”
string s2 (s1);                                  // s2 = “Hello”
string s3 (s1, 1, 2);                            // s3 = “el”
string s4 ("Hello World", 5);                     // s4 = “Hello”
string s5 (5, ‘*’);                              // s5 = “*****”
string s6 (s1.begin(), s1.begin()+3);              // s6 = “Hel”

Source: hackerearth.com

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