Thread: Normalization Problem

I must write a function that has a one dimensional double array and the number of values in the array as its arguments. Normalize the values. I must also print the maximum, minimum, average and numbers of values above the average in the array.

The equation that computes the normalized value from a value x is:
Normalized x= (x-min(array))/(max(array)-min(array))

My code does not print the correct normalized value, average and values above average.

Code:

#include <stdio.h>


int findMax( double array1[], int num_elements) // This function computes the maximum value of the array
{
   int i, max=-32000;
   for (i=0; i<num_elements; i++)
   {
     if (array1[i]>max)
     {
        max=array1[i];
     }
   }
   return(max);
}
int findMin( double array1[], int num_elements) // This function computes the minimum value of the array
{
    int i, min=0;
    for (i=0; i<num_elements; i++)
    {
       if (i==0)
            min=array1[i];
    else
        if (array1[i]<min)
            min=array1[i];
    }
    return(min);
}
    double averageX(double array1[], int num_elements)  //This function computes the average value of the array, and the number of values that are
                                                        // larger then the average
    {
        float average;
        int i, sum=0, valuesAboveAverage=0;


            for (i=0; i<num_elements; i++)
            {
                sum+=array1[i];
                average=sum/num_elements;


                if (array1[i]>average)
                    valuesAboveAverage++;
            }
            printf(" Values above the average: %d\n", valuesAboveAverage);
            printf("Average: %f\n", average);


            return(average);


    }


    void norm_1D(int min, int max, int average, double array1[], int num_elements)  // This function computes the normalized values of the original
                                                                                    // array values
    {
        int i;
        double normalizedVal[10];
        for (i=1; i<num_elements; i++)
        {
                normalizedVal[i]=(array1[i]-min)/ (max-min);
        }
        for (i=0; i<10; i++)
        printf("Normalized Values: %5.2f\n", normalizedVal[i]);
    }


int main(void)
{
   double  array1[10] = {1, 0, -8, 10, 8.8, 4.5, 2, 12, 9, 5};
   int max, min;
   double average;




   max = findMax(array1, 10);
   min = findMin(array1, 10);
   average = averageX(array1, 10);
   norm_1D(min, max, average, array1, 10);


   printf("The min is %d\n", min);
   printf("The max is %d\n", max);


    return(0);
}

Okay, so everything is working but the above average function. I put it in another function but it still won't give me the right answer.

Code:

void aboveAverage(double average, int num_elements, double array1[])
    {
    int i;
    double aboveAverage;
        for (i=0; i<num_elements; i++)
        {
            if (array1[i]>average)
            aboveAverage++;
        }
        
    printf("Values above the average: %5.2f\n", aboveAverage);
    
    }

It is working fine now, thank you very much!