Use a member initialization list to make the TeamInfo constructor initialize the vector listOfPointsInSeason with a size of 6. Note: Including a vector in an initialization list causes that vector's constructor to be called with the value in the parens.#include <iostream>#include <vector>using namespace std;class TeamInfo { public: TeamInfo(); void PrintGamesInSeason() const; private: vector<int> listOfPointsInSeason;};TeamInfo::TeamInfo() : /* Your code goes here */ {}void TeamInfo::PrintGamesInSeason() const { cout << "There are " << listOfPointsInSeason.size() << " games in a season." << endl;}int main() { TeamInfo myTeam; myTeam.PrintGamesInSeason(); return 0;} ### Learning Objective: Constructor Initializer Lists in C++In this exercise, you will learn how to use a member initialization list to initialize a vector within a class constructor. Specifically, we will initialize the vector `listOfPointsInSeason` with a size of 6.#### Code Example```cpp#include #include using namespace std;class TeamInfo {public: TeamInfo(); void PrintGamesInSeason() const;private: vector listOfPointsInSeason;};TeamInfo::TeamInfo() : listOfPointsInSeason(6) { /* Your code goes here */}void TeamInfo::PrintGamesInSeason() const { cout << "There are " << listOfPointsInSeason.size() << " games in a season." << endl;}int main() { TeamInfo myTeam; myTeam.PrintGamesInSeason(); return 0;}```#### Explanation- **Member Initialization List**: The constructor of the class `TeamInfo` uses a member initialization list to initialize `listOfPointsInSeason` with a size of 6. This is done by calling the vector's constructor with the size value inside the parentheses.- **Constructor**: `TeamInfo::TeamInfo() : listOfPointsInSeason(6) {}` initializes `listOfPointsInSeason` to be a vector with 6 default-initialized integers.- **PrintGamesInSeason Function**: This function prints the size of the vector, which indicates the number of games in a season.- **`main` Function**: It creates an instance of `TeamInfo` and calls `PrintGamesInSeason` to demonstrate the initialized vector's size.Explore how initializing class members with an initializer list can streamline your object construction and ensure efficiency in your programs.

Answered: Use a member initialization list to…

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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Question

Use a member initialization list to make the TeamInfo constructor initialize the vector listOfPointsInSeason with a size of 6. Note: Including a vector in an initialization list causes that vector's constructor to be called with the value in the parens.

#include <iostream>
#include <vector>
using namespace std;

class TeamInfo {
public:
TeamInfo();
void PrintGamesInSeason() const;

private:
vector<int> listOfPointsInSeason;
};

TeamInfo::TeamInfo() : /* Your code goes here */ {
}

void TeamInfo::PrintGamesInSeason() const {
cout << "There are " << listOfPointsInSeason.size() << " games in a season." << endl;
}

int main() {
TeamInfo myTeam;

myTeam.PrintGamesInSeason();

return 0;
}

### Learning Objective: Constructor Initializer Lists in C++

In this exercise, you will learn how to use a member initialization list to initialize a vector within a class constructor. Specifically, we will initialize the vector `listOfPointsInSeason` with a size of 6.

#### Code Example

```cpp
#include <iostream>
#include <vector>
using namespace std;

class TeamInfo {
public:
TeamInfo();
void PrintGamesInSeason() const;

private:
vector<int> listOfPointsInSeason;
};

TeamInfo::TeamInfo() : listOfPointsInSeason(6) {
/* Your code goes here */
}

void TeamInfo::PrintGamesInSeason() const {
cout << "There are " << listOfPointsInSeason.size() << " games in a season." << endl;
}

int main() {
TeamInfo myTeam;
myTeam.PrintGamesInSeason();

return 0;
}
```

#### Explanation

- **Member Initialization List**: The constructor of the class `TeamInfo` uses a member initialization list to initialize `listOfPointsInSeason` with a size of 6. This is done by calling the vector's constructor with the size value inside the parentheses.

- **Constructor**: `TeamInfo::TeamInfo() : listOfPointsInSeason(6) {}` initializes `listOfPointsInSeason` to be a vector with 6 default-initialized integers.

- **PrintGamesInSeason Function**: This function prints the size of the vector, which indicates the number of games in a season.

- **`main` Function**: It creates an instance of `TeamInfo` and calls `PrintGamesInSeason` to demonstrate the initialized vector's size.

Explore how initializing class members with an initializer list can streamline your object construction and ensure efficiency in your programs.

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