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Introduction To C++
C++ is a general-purpose programming language that was developed as an enhancement of the C language to include object-oriented paradigm. It is an imperative and a compiled language.
C++ is a middle-level language rendering it the advantage of programming low-level (drivers, kernels) and even higher-level applications (games, GUI, desktop apps etc.). The basic syntax and code structure of both C and C++ are the same.
C++ programming language was developed in 1980 by Bjarne Stroustrup at bell laboratories of AT&T (American Telephone & Telegraph), located in U.S.A. Bjarne Stroustrup is known as the founder of C++ language.
Overloading Ostream Operator in C++ - Hackerrank Solution
Problem
The task is to overload the << operator for Person class in such a way that for p being an instance of class Person the result of:
std::cout << p << " " << <some_string_value> << std::endl;
produces the following output:
first_name=<first_name>,last_name=<last_name> <some_string_value>
where:
- <first_name> is the value of p’s first_name_
- <last_name> is the value of p’s last_name_
- <some_string_value> is an arbitrary std::string value
Input Format :
The input is read by the provided locked code template. In the only line of the input there are 3 space-separated strings first_name, last_name, event. The values of first_name and last_name will be used to create an object p of type Person. The value of event will be used by the provided code to produce the output.
Constraints :
Each word in the input contains only English letters and is no longer than 15 characters
Output Format :
The output should be produced by the provided locked code template. This code will use the implementation of Person public methods and the overloaded << operator to produce the output. Specifically, the output wiil be produced by the following code:
cout << p << " " << event << endl;
Sample Input :
john doe registered
Sample Output :
first_name=john,last_name=doe registered
Problem
The task is to overload the << operator for Person class in such a way that for p being an instance of class Person the result of:
std::cout << p << " " << <some_string_value> << std::endl;
produces the following output:
first_name=<first_name>,last_name=<last_name> <some_string_value>
where:
- <first_name> is the value of p’s first_name_
- <last_name> is the value of p’s last_name_
- <some_string_value> is an arbitrary std::string value
Input Format :
The input is read by the provided locked code template. In the only line of the input there are 3 space-separated strings first_name, last_name, event. The values of first_name and last_name will be used to create an object p of type Person. The value of event will be used by the provided code to produce the output.
Constraints :
Each word in the input contains only English letters and is no longer than 15 characters
Output Format :
The output should be produced by the provided locked code template. This code will use the implementation of Person public methods and the overloaded << operator to produce the output. Specifically, the output wiil be produced by the following code:
cout << p << " " << event << endl;
Sample Input :
john doe registered
Sample Output :
first_name=john,last_name=doe registered
Overloading Ostream Operator in C++ – Hacker Rank Solution
#include <iostream> using namespace std; class Person { public: Person(const string& first_name, const string& last_name) : first_name_(first_name), last_name_(last_name) {} const string& get_first_name() const { return first_name_; } const string& get_last_name() const { return last_name_; } private: string first_name_; string last_name_; }; // Enter your code here. /* Overloading Ostream Operator in C++ - Hacker Rank Solution START */ ostream& operator<<(ostream& Output, Person& p) { Output << "first_name=" << p.get_first_name() << "," << "last_name=" << p.get_last_name(); return Output; } /* Overloading Ostream Operator in C++ - Hacker Rank Solution END */ int main() { string first_name, last_name, event; cin >> first_name >> last_name >> event; auto p = Person(first_name, last_name); cout << p << " " << event << endl; return 0; }
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