text: #include<bits/stdc++.h>
  #include<string>
  using namespace std ;
  
  // It makes our work with strings a lot easier 
  // The string class basically wraps our char arr inside a string object 
  int main(){
  
  	// String Init 
  	string s0 ; 
  	string s1("hello"); 
  	string s2 = "Hello world!"; 
  	string s3(s2); // using copy constructor of String Class 
  
  	if(s0.empty()){  // it returns a boolean as to whether a string is ampty or not 
  		cout << "s0 is empty" << endl ;
  	}
  	return 0 ;
  }