Thread: function creator

There are some unclear areas in your code that have me guessing as to what exactly you are looking for. For now, I will demonstrate how to send in a char array with a function call and return the minimum char value (minimum decimal equivalent). If this does not suit your needs, please clarify what needs to be done different.

Code:

#include <iostream.h>

char valmin(char myArray[], int arySize);

int main()
{
    char myArray[20] = "Some text here";
    char minChar;

    minChar = valmin(myArray, 20);
    cout << minChar << endl;

    return 0;
}

char valmin(char myArray[], int arySize)
{
    char tempChar = myArray[0];
    for (int i = 0; i < arySize; i++)
        tempChar = (myArray[i] < tempChar) ? myArray[i] : tempChar;

    return tempChar;
}

David

Ok, I see what you are saying. Here is some lengthy code that helps to break down the process using a type of bubble sort to walk through the array. You could probably clean it up but this will work the way it is.

Code:

#include <iostream.h>
#include <string.h>

#define SIZE 20
struct ArrayGroup
{
    char originalArray[SIZE];
    char orderedArray[SIZE];
};

void valmin(ArrayGroup &myGroup);

int main()
{
    ArrayGroup arrayGroup;
	
    for (int i = 0; i < SIZE; i++)
    {
        arrayGroup.originalArray[i] = '\0';
        arrayGroup.orderedArray[i] = '\0';
    }

    cout << "Enter a string of up to " << SIZE << " characters: ";
    cin.getline(arrayGroup.originalArray, SIZE);

    valmin(arrayGroup);
    
    cout << "Original: " << arrayGroup.originalArray << endl
        << "Ordered: " << arrayGroup.orderedArray << endl;

    return 0;
} // end main

void valmin(ArrayGroup &myGroup)
{
    char tempArray[SIZE] = {'\0'};
    char tempChar;
    int count = 0;

    for (int i = 0; i < SIZE; i++)
    {
        // ignore all spaces and null characters
        if ((myGroup.originalArray[i] != '\0') &&
            (myGroup.originalArray[i] != ' '))
            tempArray[count++] = myGroup.originalArray[i];
    } // end for loop

    for (i = 0; i < SIZE; i++)
    {
        for (int j = 0; j < SIZE; j++)
        {
            // make sure we stay in the array bounds
            if ((j + 1) < SIZE)
            {
                // set the temporary to the next in the array
                tempChar = tempArray[j + 1];

                // compare only valid values
                if ((tempArray[j] != '\0') &&
                    (tempArray[j + 1] != '\0') &&
                    (tempChar < tempArray[j]))
                {
                    // swap characters
                    tempArray[j + 1] = tempArray[j];
                    tempArray[j] = tempChar;
                } // end if
            } // end if
        } // end for loop
    } // end for loop
    strcpy(myGroup.orderedArray, tempArray);
} // end valmin

Like I said, a bit lengthy, but hopefully this will give you a better idea of the process involved.

David