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  1. In Topic: Binary Tree program

    Posted 5 Apr 2013

    I forgot to mention that I need to insert all the numbers I showed above.
  2. In Topic: Sum of the Sum of Digits

    Posted 29 Mar 2013

    View PostCTphpnwb, on 28 March 2013 - 06:13 AM, said:

    Did you read my post? You cannot have static variables in the function DigitSum. My version of this function takes less than ten lines. Don't over complicate this.

    Thank you
  3. In Topic: Sum of the Sum of Digits

    Posted 27 Mar 2013

    View Postjjl, on 27 March 2013 - 02:47 PM, said:

    It sounds like you just need to pass the result of DigitSum to another call of DigitSum

    DigitSum(DigitSum(N));
    
    


    Also, I don't know how big you guys are on math but you know a factorial of (for example)4 is the result of 4*3*2*1? I'm wondering what the math. term is for the result of calculating 4+3+2+1? Would you know what the name of that math term is?
  4. In Topic: Sum of the Sum of Digits

    Posted 27 Mar 2013

    View Postjjl, on 27 March 2013 - 02:47 PM, said:

    It sounds like you just need to pass the result of DigitSum to another call of DigitSum

    DigitSum(DigitSum(N));
    
    



    I tried what you give me on 12345 and got 33. The MegaSum function is supposed to be recursive(in case that fact helps). If you think something's missing, here's my entire program. Everything except the MegaSum function works.
    // Author: Connor Wells
    // Date: 3/26/2013
    // Theme: Recursion Stuff
    #include <iostream>
    #include <cstdio>
    using namespace std;
    int CountDigits(int NB);
    int FirstDigit(int num);
    int DigitSum(int numb);
    int ReverseOrder(int NM);
    int MegaSum(int N);
    int Multiply(int x, int y);
    int PowerFunc(int C, int pow);
    int ArraySum(int A[], int SIZE);
    
    int main()
    {
        int number;
        int number2;
        int number3;
        int number4;
        int number5;
        int SZ = 5;
        int B[] = {10, 20, 30, 40, 50};
        int CT;
        int FT;
        int SU;
        int REV;
        int MS;
        int PO;
        int MU;
        int AS;
        cout << "Enter a positive multi-digit number: ";
        cin >> number;
        cout << endl;
        cout << "Enter a number to be multiplied: ";
        cin >> number4;
        cout << endl;
        cout << "Now  enter another number to be multiplied: ";
        cin >> number5;
        cout << endl;
        cout << "Enter a number to be raised power-wise: ";
        cin >> number2;
        cout << endl;
        cout << "Enter a number to act as the last number's exponent: ";
        cin >> number3;
        cout << endl;
        cout << "The content of content of said array is : ";
        for(int i = 0; i < SZ; i++)
        {
            cout << B[i] << " ";
        }
        cout << endl << endl;
    
        CT = CountDigits(number);
        FT = FirstDigit(number);
        SU = DigitSum(number);
        REV = ReverseOrder(number);
        MS = MegaSum(number);
        PO = PowerFunc(number2, number3);
        MU = Multiply(number4, number5);
        AS = ArraySum(B, SZ);
    
        cout << "The number of digits of " << number << " is " << CT << "." << endl << endl;
        cout << "The first digit of "  << number << " is " << FT << "." << endl << endl;
        cout << "The sum of all the digits of " << number << " is " << SU << "." << endl << endl;
        cout << "The number " << number << " in reverse order is " << REV << "." << endl << endl;
        cout << "The mega-sum of all the digits of " << number << " is " << MS << "." << endl << endl;
        cout << number2 << " raised to the " << number3 << " power is " << PO << "." << endl << endl;
        cout << number4 << " times " << number5 << " equals " << MU << "." << endl << endl;
        cout << "The sum of all your array's content is " << AS << "." << endl << endl;
    
        return 0;
    }
    
    int CountDigits(int NB)
    {
        static int count = 0;
        if (NB > 0)
        {
        count++;
        CountDigits(NB / 10);
        }
        else
        {
        return 0;
        }
        return count;
    }
    
    int FirstDigit(int num)
    {
        static int first;
        if (num > 0)
        {
        first = num % 10;
        FirstDigit(num / 10);
        }
        else
        {
        return 0;
        }
        return first;
    }
    
    int DigitSum(int numb)
    {
        static int sum = 0;
        static int R;
        if (numb > 0)
        {
        R = numb % 10;
        sum = sum + R;
        DigitSum(numb / 10);
        }
        else
        {
        return 0;
        }
        return sum;
    }
    
    int ReverseOrder(int NM)
    {
        static int rev;
        static int SM;
        if (NM > 0)
        {
        rev = NM % 10;
        SM = SM * 10 + rev;
        ReverseOrder(NM / 10);
        }
        else
        {
        return 0;
        }
        return SM;
    }
    
    int MegaSum(int N)
    {
        if (N > 0)
        {
        return DigitSum(DigitSum(N));
        }
        else
        {
        return 0;
        }
    }
    
    int PowerFunc(int C, int pow)
    {
        int result;
        if(pow <= 1)
        {
            result = C;
        }
        else
        {
            result = C * PowerFunc(C, pow - 1);
        }
        return result;
    }
    
    
    int Multiply(int x, int y)
    {
        if (y > 0)
        {
            return x + Multiply(x, y - 1);
        }
        else
        {
            return 0;
        }
    }
    
    int ArraySum(int A[], int SIZE)
    {
        if (SIZE <= 0)
        {
            return 0;
        }
        else
        {
            return A[SIZE - 1] + ArraySum(A, SIZE - 1);
        }
    }
    
    
  5. In Topic: Inventory report with linked lists

    Posted 24 Mar 2013

    View Postjimblumberg, on 24 March 2013 - 01:45 PM, said:

    You won't dereference a null pointer until you read your file. I suggest you work on that first. Post your current code, I doubt you're even getting any information from the file yet.

    Jim

    No offense, but isn't the infinite loop causing the output to not be displayed?

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