Can someone please help me with this coding?? Plz plz need help!!!
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Thread: Can someone please help me with this coding?? Plz plz need help!!!

  1. #1
    Join Date
    Mar 2012
    Posts
    7

    Can someone please help me with this coding?? Plz plz need help!!!

    CAN SOMEONE PLEASE HELP ME WITH THIS CODING??
    I have to finish this code for homework but I have no idea at all?? could anyone help me?

    The directions are:

    1.) A function function that takes, as an in parameter, a single character. If this character
    is a vowel (a, e, i, o or u) it will return true. Otherwise it will return false. You must
    deal with the fact that these vowels could be uppercase or lowercase. To do this add,
    #include <cctype> to the top of your program. Then, you may use the function
    tolower with prototype, char tolower(char), to convert a character to lowercase
    before deciding if it is a vowel or not.

    2.)
    A function that takes a file name as an in parameter and four in/out parameters and
    returns a Boolean. The in/out parameters are four counters, the number of vowels, the
    number of white space characters, the number of digits, and the number of symbols.
    This function will open the fille for reading if the open fails, the function should return
    false. Otherwise, the function will look at every character in the file and update the
    appropriate counter. When the end-of-fille (EOF) is encountered, the function should
    close the le and return true to the caller. You will want to use two functions from
    the cctype library, isdigit and isspace. The function isdigit, with prototype
    bool isdigit(char), takes a character and returns trueif the character is a digit and
    false otherwise. The function isspace, with prototype bool isspace(char), takes
    a character and returns true if the character is a white space character and false
    otherwise.


    I have the following program so far FINISHED for question 1(I am 100%% sure it is right) but I do not understand how to do Question 2 AT ALL PLEASE HELP:


    #include <iostream>
    #include <string>



    using namespace std;

    // Prototypes
    void incrementStatistics(string, int&, int&, int&);
    void displayStatistics(int, int, int);
    bool isVowel(char);

    int main()
    {
    string word; // Input: the word entered by the user.
    int numVowels = 0; // Holds the number of vowels.
    int numConsonants = 0; // Holds the number of consonants.
    int numLetters = 0; // Holds the total number of letters.
    bool doneWithInput = false; // Flag to control when the loop is done.



    while (!doneWithInput)
    {

    // Prompt for a word
    cout << "Please enter a word (\"bye\" to exit): ";
    cin >> word;

    // If the word is "bye" stop updating the statistics. Othewise,
    // update the statistics using the current word.
    if (word == "bye")
    doneWithInput = true;
    else
    incrementStatistics(word, numVowels, numConsonants, numLetters);
    }

    // Dispaly the statistics
    displayStatistics(numVowels, numConsonants, numLetters);

    return 0;
    }

    // This function will increment the statics using the in/out parameters numVowels,
    // numConsonants, and numLetters.
    // Pre: numVowels >= 0, numConsonants >= 0 and numLetters >= 0
    // Post: numVowels, numConsonants and numLetters are incremented appropriately
    void incrementStatistics(string word, int& numVowels, int& numConsonants, int& numLetters)
    {

    int currPosition; // The current position in the string.

    // Increment the number of letters by the number of letters in the string.
    numLetters += word.length();

    // Count the number of vowels and the number of consonants. We will use
    // a for loop to test each character in the string.
    for (currPosition = 0; currPosition < word.length(); currPosition++)
    {
    if (isVowel(word.at(currPosition)))
    numVowels++;
    else
    numConsonants++;
    }
    }

    // This function will deteremine if a letter is a vowel or not.
    // Pre: a valid character
    // Post: true if the letter is a vowel false otherwise
    bool isVowel(char letter)
    {
    // convert letter to a lowercase letter
    letter = tolower(letter);

    if (letter == 'a' || letter == 'e' || letter == 'i' || letter == 'o' || letter == 'u')
    return true;
    else
    return false;
    }

    // This function will display the statistics nicely to the screen
    // Pre: numVowels >= 0, numConsonants >= 0, and numLetters >= 0.
    // Post: none.
    void displayStatistics(int numVowels, int numConsonants, int numLetters)
    {
    cout << endl;
    cout << " Vowels: " << numVowels << endl;
    cout << " Consonants: " << numConsonants << endl;
    cout << "Total Letters: " << numLetters << endl;
    }






    Please Help I know it could be a lot of work but I really need help right now... thanks

  2. #2
    Join Date
    Nov 2012
    Location
    Kolkata, WestBengal, India
    Posts
    15

    Re: Can someone please help me with this coding?? Plz plz need help!!!

    This is your homework - so why don't you do it yourself?

    Anyway, just some hints for you to carry on (Q 2) -
    Use -
    #include <iostream>
    #include <fstream>

    sample code to read files -
    Code:
    ifstream fin;
    fin.open("my-input-file.txt", ios::in);
    
    char my_character ;
    int number_of_lines = 0;
      while (!fin.eof() ) {
        fin.get(my_character);
        cout << my_character;
        if (my_character == '\n'){
          ++number_of_lines;
        }
      }
    cout << "NUMBER OF LINES: " << number_of_lines << endl;
    or you can also use -
    Code:
    int v=0;
    fstream file_op("c:\\proj3cpp.txt",ios::in);
            while(!file_op.eof())
            {
                  file_op.getline(str,3000);
                  cout <<str;
            }
    use str[] for every char read -
    while(str[v] != '\0') {
    <your code goes here>
    }

    Also, for your first Question, the isVowel() function, here is another approach -
    Code:
    bool isVowel(char letter)
    {
      switch(letter){
        case 'a':
        case 'A': 
        case 'e':
        case 'E': 
        case 'i':
        case 'I': 
        case 'o':
        case 'O': 
        case 'u':
        case 'U': return true;
        default: return false;
      }
    }
    ** Please use
    Code:
     <your code goes here>
    to preserve the code indentation and it's true sence.

  3. #3
    Join Date
    Mar 2012
    Posts
    7

    Re: Can someone please help me with this coding?? Plz plz need help!!!

    Hello, thank you for helping me get started but I honestly have no idea how to start this.. could you or anyone help??

  4. #4
    Join Date
    Nov 2000
    Location
    Voronezh, Russia
    Posts
    6,071

    Re: Can someone please help me with this coding?? Plz plz need help!!!

    Quote Originally Posted by sunghun94 View Post
    I honestly have no idea how to start this..
    You always have to start with identifying the parts in requirements that you 1) understand completely (and you definitely did something similar in the past), 2) understand more or less (you did something but not exactly like that), 3) you heard something about but not sure of, and finally 4) you have no idea what this is about.

    You pay special attention to nouns (which are going to be your data) and verbs (which are going to be your actions).

    You pay some very special attention to what is expected as a result: for example, in your case you are expected to write a function that takes some parameters and returns some value of predefined type.

    After having this put in list you just go top to down, complete your understanding in all parts (be prepared to make an elementary app on each problem to confirm the understanding to yourself), and ultimately put all together in one solution.

    So, would you be so kind to give us the list with qualification of the parts. Something like this:

    - function: I definitely know what is C++ function
    - function that takes five parameters: I did write functions before, with number of parameters 0 to 3
    - etc.
    Best regards,
    Igor

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