Sorting and Arrays

Hi all. I am supposed to write a program that will read some number of floating point data into x and then compute the sum, the mean and the median of these data. Need help on my for loop equations. Any suggestions?

#pragma warning(disable:4996)
#include <stdio.h>
#define SENTINEL -1

int fillArray(float []);
void printArray(float[], int, float);
float computeSum(float[], int);
float computeMean(float[], int);
void sortArray(float[], int);

void main()
{
    float theArray [20];
    int arraySize;
    float arraySum;
    float arrayMean;
    arraySize = fillArray(theArray)-1;
    arraySum = computeSum(theArray, arraySize);
    arrayMean = computeMean(theArray, arraySize);
    printArray(theArray, arraySize, arraySum, arrayMean);
    sortArray(theArray, arraySize);
    getchar();
    getchar();
}

int fillArray(float theArray[20])
{
    int counter = 0;
    float userInput;
    do{
       printf("Enter a value for the array (Index = [%d]:", counter);
       scanf("%f", &userInput);
       theArray[counter] = userInput;
       counter++;
       }
    
    while
    (
        userInput != SENTINEL
    );
    
    return counter;
}

float computeSum(float theArray[20], int arraySize)
{
    int i;
    float arraySum = 0;
    for(i=0, i<arraySum, i++)
    {
        arraySum = arraySum+theArray[1];
        return arraySum;
    }
}

float computeMean(float arraySum, int arraySize)
{
    float arrayMean;
    arrayMean = arraySum/arraySize;
    return arrayMean;
}
    
    
    
void printArray (float theArray[20], int arraySize)
{
    int i;
    printf("The array is as follows:\n");
    for(i=0, i<arraySize, i++)
        
            printf("%f", theArray[i]);
    printf("\n\nThe sum of the array is %2 if", arraySum);
    printf("\n\nThe mean of the array is %2 if", arrayMean);
    
}

void sortArray(float theArray[20], int arraySize)
{
    int i;
    int j;
    for(j=0, j<arraySize-1, j++)
    {
        for(j=0, j<arraySize, j++)
        {
            if (theArray[j]>theArray[j+1])
            {
                temp = theArray[j+1];
                theArray[j+1]= theArray[j];
                theArray[j] = temp
            }
        }
    }
    printf("\n\n");
    for(i=0, i<arraySize, i++)
        printf("%2 if", theArray[i]);
    
}

Last edited on

shadowCODE (680)

Ask a specific question pls

thecryptarch (14)

Sorry. I really do not know how to word it. I guess I am asking is why am I getting a red flag with all my for loop equations for example line 49 says expression result unused in regards to the "<" (using xcode). I am new to coding and have been simply replicating through the help of this website, http://codingbat.com/doc/java-array-loops.html, where I am using the below example as my guide.

// 2. allocate 100 Account objects, and store their pointers in the array
for (int i=0; i<accounts.length; i++) {
  accounts[i] = new Account();
}

shadowCODE (680)

for(i=0, i<arraySum, i++), use ; to separate for loop sections. Like in the example you are following.

thecryptarch (14)

Wow, slipped my mind. Thank you. Another question. At line 56, I am getting an error which states conflicting types for "computeMean". Is it because of the "[]" within the parenthesis at line 8 for the float?

shadowCODE (680)

yes

thecryptarch (14)

Now one last question. Now that I removed the "[]" within the parenthesis at line 8, line 19 now states an error "Passing 'float[20]' to a parameter of incompatible type 'float'. Not sure how to fix this without having the previous problem.

shadowCODE (680)

you were not supposed to remove the []. Instead to add it where it was not.

fg109 (709)

Actually, according to his code he should change line 19 instead.

arrayMean = computeMean(arraySum, arraySize);

dhayden (5795)

Line 52 is in the wrong place. Since it's inside the loop, you are returning from the function after making just one pass through the loop.

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