Please help me how can I write the code here #include <iostream>#include <string>// Function to repeat a string by a given integerstd::string multiply(const std::string& str, int num) { std::string result; for (int i = 0; i < num; ++i) { result += str; } return result;}// Function to multiply two integersint multiply(int num1, int num2) { return num1 * num2;}// Function to multiply a double and an integerdouble multiply(double num1, int num2) { return num1 * num2;}// Function template to handle multiple data typestemplate <typename T>T multiply_type(T num1, int num2) { return num1 * num2;}int main() { int choice; std::cout << "Choose a test case (1-5): "; std::cin >> choice; switch (choice) { case 1: { int num1, num2; std::cout << "Enter two integers: "; std::cin >> num1 >> num2; int result = multiply(num1, num2); std::cout << "Output: " << result << std::endl; break; } case 2: { int num1, num2; std::cout << "Enter two integers: "; std::cin >> num1 >> num2; int result = multiply(num1, num2); std::cout << "Output: " << result << std::endl; break; } case 3: { double num1; int num2; std::cout << "Enter a double and an integer: "; std::cin >> num1 >> num2; double result = multiply(num1, num2); std::cout << "Output: " << result << std::endl; break; } case 4: { std::string str; int num; std::cout << "Enter a string and an integer: "; std::cin >> str >> num; std::string result = multiply(str, num); std::cout << "Output: " << result << std::endl; break; } case 5: { std::string str; int num; std::cout << "Enter a string and an integer: "; std::cin >> str >> num; std::string result = multiply(str, num); std::cout << "Output: " << result << std::endl; break; } default: std::cout << "Invalid choice!" << std::endl; } return 0;} ## Understanding Function Implementation in C++In this tutorial, we will delve into creating and implementing functions in C++. Specifically, we will focus on the `multiply` function and how to handle different data types. Below, you will find example code in multiple files to illustrate this concept.### 1. **multiply.cpp**This file contains the implementation of the multiply functions. Your task is to replace the placeholders (denoted by `...`) with the actual code.```cpp// Replace ... with your code. Hit enter key to get more vertical space// IMPLEMENT#include "multiply.h"std::string multiply(std::string string1, int number){ ...}int multiply(int number1, int number2){ ...}double multiply(double number1, int number2){ ...}```### 2. **multiply.h**The header file declares the `multiply` functions. Here, we use templates to allow our functions to handle different data types generically. ```cpp// IMPLEMENT#ifndef MULTIPLY_H#define MULTIPLY_H#include std::string multiply(std::string string1, int number);int multiply(int number1, int number2);double multiply(double number1, int number2);// In templates, we can't separate the declaration from definition; We have to write it in a single location.templateT multiply(T entity1, int number){ // Write your code below // You may need to initialize your return value like, // T return_value = T(); ...}#endif // MULTIPLY_H```### 3. **multiply_driver.cpp**In this file, we review and test our `multiply` functions. Replace the placeholders with your own test cases to validate the function implementation.```cpp// REVIEW#include #include "multiply.h"// Replace ... with your code. Hit enter key to get more vertical spaceint main(int argc, char *argv[]){ // Testing multiply std::cout << multiply(10, 10) << std::endl; /* By exactly following the pattern above, test your function below for rest of the test cases in the order they are given */ std::cout << "(10, 10) << std::endl;

Include the necessary libraries: <iostream>, <string>.Define a function multiply that…

Please help me how can I write the code here #include #include // Function to repeat a string by a given integer std::string multiply(const std::string& str, int num) { std::string result; for (int i = 0; i < num; ++i) { result += str; } return result; } // Function to multiply two integers int multiply(int num1, int num2) { return num1 * num2; } // Function to multiply a double and an integer double multiply(double num1, int num2) { return num1 * num2; } // Function template to handle multiple data types template T multiply_type(T num1, int num2) { return num1 * num2; } int main() { int choice; std::cout << "Choose a test case (1-5): "; std::cin >> choice; switch (choice) { case 1: { int num1, num2; std::cout << "Enter two integers: "; std::cin >> num1 >> num2; int result = multiply(num1, num2); std::cout << "Output: " << result << std::endl; break; } case 2: { int num1, num2; std::cout << "Enter two integers: "; std::cin >> num1 >> num2; int result = multiply(num1, num2); std::cout << "Output: " << result << std::endl; break; } case 3: { double num1; int num2; std::cout << "Enter a double and an integer: "; std::cin >> num1 >> num2; double result = multiply(num1, num2); std::cout << "Output: " << result << std::endl; break; } case 4: { std::string str; int num; std::cout << "Enter a string and an integer: "; std::cin >> str >> num; std::string result = multiply(str, num); std::cout << "Output: " << result << std::endl; break; } case 5: { std::string str; int num; std::cout << "Enter a string and an integer: "; std::cin >> str >> num; std::string result = multiply(str, num); std::cout << "Output: " << result << std::endl; break; } default: std::cout << "Invalid choice!" << std::endl; } return 0; }