C++- Help with the section for getNextId only. // Program to implement a very simplified list of tweets // from a single simulated Twitter account // Tweets can be added, deleted, and liked #include <iostream> using namespace std; const int MSGSIZE = 100; // Maximum size for a tweet message const int CAPACITY = 10; // Maximum number of tweets // Structure used to define a tweet entry struct Tweet { int id; char msg[MSGSIZE]; int likes; }; /* * Prints out an entire timeline to the screen * timeline = timeline of tweets to be printed * usedSize = number of tweets in the timeline * selected = position number of currently selected tweet */ void displayTimeline(const Tweet timeline[], int usedSize, int selected); /* * Edits currently selected tweet * with a new message entered by the user. * timeline = timeline in which the tweet is to be edited * usedSize = number of tweets in the timeline * selected = position number of currently selected tweet * If 'selected' represents a valid array position, the * selected tweet will be updated. * If 'selected' is not valid a 'no tweet is selected message' will be * displayed and no changes will be made. */ void doEditTweet(Tweet timeline[], int usedSize, int selected); /* * Adds a like to the currently selected tweet. * timeline = timeline in which the tweet is to be edited * usedSize = number of tweets in the timeline * selected = position number of currently selected tweet * If 'selected' represents a valid array position, the * selected tweet will be updated. * If 'selected' is not valid a 'no tweet is selected message' will be * displayed and no changes will be made. */ void doLikeTweet(Tweet timeline[], int usedSize, int selected); /* * Deleted currently selected tweet. * timeline = timeline in from which the entry is to be deleted * usedSize = number of tweets in the timeline * If 'selected' represents a valid array position: * the selected tweet will be deleted * usedSize will be updated to reflect the updated number of tweets in the timeline * selected will be updated to -1 * If 'selected' is not valid a 'no tweet is selected message' will be * displayed and no changes will be made. */ void doDeleteTweet(Tweet timeline[], int& usedSize, int& selected); /* * If there is room in the timeline for new tweets, then this gets * a new tweet from the user and adds it to the timeline. * timeline = timeline in which the tweet is to be added * usedSize = number of tweets in the timeline * If tweet was able to be added, returns the position number in the * timeline of where the item was added, and usedSize will be * updated to reflect the number of tweets now in the timeline. * If tweet was not able to be added, returns -1, and usedSize * remains unchanged. */ int doAddTweet(Tweet timeline[], int& usedSize); /* * Adds a new tweet to the list * timeline = timeline in which the entry is to be added * usedSize = number of tweets in the timeline * message = tweet message to be added * If tweet was able to be added, .

1. C++- Help with the section for getNextId only.
// Program to implement a very simplified list of tweets
// from a single simulated Twitter account
// Tweets can be added, deleted, and liked
#include <iostream>
using namespace std;
const int MSGSIZE = 100; // Maximum size for a tweet message
const int CAPACITY = 10; // Maximum number of tweets
// Structure used to define a tweet entry
struct Tweet
{
int id;
char msg[MSGSIZE];
int likes;
};
/*
* Prints out an entire timeline to the screen
* timeline = timeline of tweets to be printed
* usedSize = number of tweets in the timeline
* selected = position number of currently selected tweet
*/
void displayTimeline(const Tweet timeline[], int usedSize, int selected);
/*
* Edits currently selected tweet
* with a new message entered by the user.
* timeline = timeline in which the tweet is to be edited
* usedSize = number of tweets in the timeline
* selected = position number of currently selected tweet
* If 'selected' represents a valid array position, the
* selected tweet will be updated.
* If 'selected' is not valid a 'no tweet is selected message' will be
* displayed and no changes will be made.
*/
void doEditTweet(Tweet timeline[], int usedSize, int selected);
/*
* Adds a like to the currently selected tweet.
* timeline = timeline in which the tweet is to be edited
* usedSize = number of tweets in the timeline
* selected = position number of currently selected tweet
* If 'selected' represents a valid array position, the
* selected tweet will be updated.
* If 'selected' is not valid a 'no tweet is selected message' will be
* displayed and no changes will be made.

2. */
void doLikeTweet(Tweet timeline[], int usedSize, int selected);
/*
* Deleted currently selected tweet.
* timeline = timeline in from which the entry is to be deleted
* usedSize = number of tweets in the timeline
* If 'selected' represents a valid array position:
* the selected tweet will be deleted
* usedSize will be updated to reflect the updated number of tweets in the timeline
* selected will be updated to -1
* If 'selected' is not valid a 'no tweet is selected message' will be
* displayed and no changes will be made.
*/
void doDeleteTweet(Tweet timeline[], int& usedSize, int& selected);
/*
* If there is room in the timeline for new tweets, then this gets
* a new tweet from the user and adds it to the timeline.
* timeline = timeline in which the tweet is to be added
* usedSize = number of tweets in the timeline
* If tweet was able to be added, returns the position number in the
* timeline of where the item was added, and usedSize will be
* updated to reflect the number of tweets now in the timeline.
* If tweet was not able to be added, returns -1, and usedSize
* remains unchanged.
*/
int doAddTweet(Tweet timeline[], int& usedSize);
/*
* Adds a new tweet to the list
* timeline = timeline in which the entry is to be added
* usedSize = number of tweets in the timeline
* message = tweet message to be added
* If tweet was able to be added, returns the position number in the
* timeline of where the item was added, and usedSize will be
* updated to reflect the number of tweets now in the timeline.
* If tweet was not able to be added, returns -1, and usedSize
* remains unchanged.
*/
int addTweet(Tweet timeline[], int& usedSize, const char message[]);
/*
* Returns the next available ID number
* timeline = timeline in which to find the highest ID
* usedSize = number of tweets in the timeline
* If timeline is empty, returns 100;
* otherwise, returns 1 + highest ID number in the timeline

3. */
int getNextId(Tweet timeline[], int usedSize);
/*
* Gets a tweet id from the user. Searches a timeline to try
* to find the specified tweet by its id.
* timeline = timeline to be searched
* usedSize = number of tweets in the timeline
* If the tweet is found, the position number of where the tweet
* is stored in the timeline will be returned. If the tweet is
* not found, a 'not found message' will be printed, and
* the value -1 will be returned.
* If timeline is empty, an 'empty' message will be printed, and
* the value -1 will be returned.
*/
int selectTweet(const Tweet timeline[], int usedSize);
int main()
{
Tweet timeline[CAPACITY]; // Twitter timeline
int choice; // User's menu choice
int usedSize = 0; // Num of tweets in the timeline
int selected = -1; // Currently selected tweet
int tmp; // Temporary variable
// Add some starter entries for testing purposes
selected = addTweet(timeline, usedSize, "Where do they get the seeds to plant seedless
watermelons?");
selected = addTweet(timeline, usedSize, "Waffles are just pancakes with convenient boxes to hold
your syrup.");
selected = addTweet(timeline, usedSize, "Last night I even struck up a conversation with a spider.
Turns out he's a web designer.");
do
{
cout << "1. Display Timelinen";
cout << "2. Select Tweetn";
cout << "3. Add New Tweetn";
cout << "4. Edit Selected Tweetn";
cout << "5. Like Selected Tweetn";
cout << "6. Delete Tweetn";
cout << "7. Exitn";
cout << endl;
cout << "Select: ";
// Get the numeric entry from the menu
cin >> choice;
// Corrects issues where user might enter a non-integer value

4. while (cin.fail())
{
cin.clear();
cin.ignore(numeric_limits<streamsize>::max(), 'n');
cout << "Select: ";
cin >> choice;
}
// Makes the 'enter' key that was pressed after the numeric entry be ignored
// Should be used after getting any numeric input from the keyboard
cin.ignore();
switch (choice)
{
case 1:
displayTimeline(timeline, usedSize, selected);
break;
case 2:
tmp = selectTweet(timeline, usedSize);
// if selected tweet exists, update selected variable;
// otherwise leave it unchanged
if (tmp > -1)
selected = tmp;
break;
case 3:
tmp = doAddTweet(timeline, usedSize);
// if tweet was added, make it be the selected tweet;
// otherwise leave it unchanged
if (tmp > -1)
selected = tmp;
break;
case 4:
doEditTweet(timeline, usedSize, selected);
break;
case 5:
doLikeTweet(timeline, usedSize, selected);
break;
case 6:
doDeleteTweet(timeline, usedSize, selected);
break;
}
} while (choice != 7);
return 0;
}

5. int doAddTweet(Tweet timeline[], int& usedSize)
{
// TODO: Write code for the function
return -1;
}
void doEditTweet(Tweet timeline[], int usedSize, int selected)
{
// TODO: Write code for the function
}
void doLikeTweet(Tweet timeline[], int usedSize, int selected)
{
// TODO: Write code for the function
}
void displayTimeline(const Tweet timeline[], int usedSize, int selected)
{
// TODO: Write code for the function
}
int addTweet(Tweet timeline[], int& usedSize, const char message[])
{
// TODO: Write code for the function
return -1;
}
int getNextId(Tweet timeline[], int usedSize)
{
// TODO: Write code for the function
return 100;
}
void doDeleteTweet(Tweet timeline[], int& usedSize, int& selected)
{
if (selected == -1)
{
cout << "no tweet is selected" << endl;
}
else
{
selected = -1;
usedSize = usedSize - 1;
}
}

6. int selectTweet(const Tweet timeline[], int usedSize)
{
return -1;
}