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2. Write a C++ function that takes a string of even length as a parameter and returns the first half of that string.

2. Write a C++ function that takes a string of even length as a parameter and returns the first half of that string.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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### Task 2: C++ String Function **Objective:** Write a C++ function that takes a string of even length as a parameter and returns the first half of that string. **Instructions:** - The function should accept a string parameter. - Ensure the string has an even number of characters before processing. - Return a new string that consists of the first half of the original string. **Example:** For an input string "HelloWorld", the function should return "Hello". **Code Skeleton:** ```cpp #include <iostream> #include <string> std::string getFirstHalf(const std::string &input) { if (input.length() % 2 != 0) { throw std::invalid_argument("String length must be even."); } return input.substr(0, input.length() / 2); } int main() { std::string str = "HelloWorld"; std::cout << "First half: " << getFirstHalf(str) << std::endl; return 0; } ``` **Discussion:** This task helps in understanding string manipulation and validation in C++. The primary operations involve checking the string length and using substring methods.
Transcribed Image Text:### Task 2: C++ String Function **Objective:** Write a C++ function that takes a string of even length as a parameter and returns the first half of that string. **Instructions:** - The function should accept a string parameter. - Ensure the string has an even number of characters before processing. - Return a new string that consists of the first half of the original string. **Example:** For an input string "HelloWorld", the function should return "Hello". **Code Skeleton:** ```cpp #include <iostream> #include <string> std::string getFirstHalf(const std::string &input) { if (input.length() % 2 != 0) { throw std::invalid_argument("String length must be even."); } return input.substr(0, input.length() / 2); } int main() { std::string str = "HelloWorld"; std::cout << "First half: " << getFirstHalf(str) << std::endl; return 0; } ``` **Discussion:** This task helps in understanding string manipulation and validation in C++. The primary operations involve checking the string length and using substring methods.
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Write a program in C++ language which will take a string with even number of characters and then display the first half of that string.

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