#include <stdio.h>
// Objective
// Make a function that sorts an array of doubles and returns the average
// and the median values from the array. NOTE: Pass by reference is
// REQUIRED for full credit.
// Details
// Begin by using the following array of data within your main function:
double values[15] = {
7.7, 1001.2, 654.7, 12.8,
0.91, 15.102, 812.5, 121.6,
382.1, 40.1, 452.0, 128.2,
544.6, 23.2, 750.1
};
// Next, create a separate function that has the following parameters:
// Input: An array of doubles and the size of the array (integer)
// Output: The average (double) and median (double) of the array. Use the
// C version of pass by reference for the output.
void processArray(double *array, int arraySize, double *average, double *median) {
// Inside this new function perform the following steps:
// Calculate the average
// Use a for loop to find the sum and divide by the size of the array
double sum = 0.0;
for (int i = 0; i < arraySize; i++) {
sum += array[I];
}
double avg = sum / arraySize;
// Sort the array using either Bubble sort or Selection sort
// This will involve creating nested for loops AFTER you have calculated the average
// Don't try to both sort and calculate the average in the same loops
for (int i = arraySize - 1; i > 0; i--) {
for (int j = 0; j < i; j++) {
if (array[j + 1] < array[j]) {
double t = array[j];
array[j] = array[j + 1];
array[j + 1] = t;
}
}
}
// Calculate the median
// The median is the middle value in a sorted array.
double med = array[arraySize / 2];
if (arraySize % 2 == 0) {
med = (med + array[(arraySize / 2) - 1]) / 2;
}
// Set the average and median pointers to the values you calculated
*average = avg;
*median = med;
}
// Back in your main function call this new function. It should take four
// parameters, the array, the size of the array, a pointer to an average
// variable and a pointer to a median variable.
// Print the average and median back in the main function. Do NOT print
// the results in the function that did the calculation. printf should
// only be in your main function.
int main(int argc, char *const argv[]) {
double average;
double median;
processArray(values, sizeof(values) / sizeof(values[0]), &average, &median);
for (int i = 0; i < sizeof(values) / sizeof(values[0]); i++) {
printf("values[%d] = %f\n", i, values[I]);
}
printf("average = %f, median = %f\n", average, median);
return 0;
}
// Results
//
// If you code works you will see the following results. Note that you
// will not receive full credit for outputting the same numbers, but for
// utilizing pass by reference.
