/* Name: Garrett Haldrup
# lab11.c
# Purpose: Solves problems assigned in Lab 11

*/

#include <stdio.h>
#include <math.h>
#include <assert.h>

float findMax(float array[], int n);
float findMin(float array[], int n);
float getMean(float array[], int n);
float getStd(float array[], int n);
void raiseWages(float wages[], float raises[], int n);
void printArray(float array[], int n);

int main() {

  printf("This program will calculate the max, min, mean, and std of a number set\n");
  printf("It will also update a wages array through a function call\n\n");

  float result;

  float testFloats[] = {85, 93.3, 90.5};
  
  float wages[] = {15.00, 14.75, 15.00, 19.50, 13.00};
  float raises[] = { 1.00, 2.00, 1.50, 0.00, 1.50};

  float newWages[] = {16, 16.75, 16.5, 19.5, 14.5};


  int testFloatSize = sizeof(testFloats)/sizeof(testFloats[0]);

  int wageSize = sizeof(wages)/sizeof(wages[0]);

  

  result = findMax(testFloats, testFloatSize);
  assert(result - 93.3 <= 0.001);
  printf("Max of set is: %.1f\n", result);
  printf("Pass!---------------------------------------------------\n");

  result = findMin(testFloats, testFloatSize);
  assert(result - 85.0 <= 0.001);
  printf("Min of set is: %.1f\n", result);
  printf("Pass!---------------------------------------------------\n");

  result = getMean(testFloats, testFloatSize);
  assert(result - 89.6 <= 0.001);
  printf("Mean of set is: %.1f\n", result);
  printf("Pass!---------------------------------------------------\n");

  result = getStd(testFloats, testFloatSize);
  assert(result - 3.4477 <= 0.001);
  printf("Std of set is: %.1f\n", result);
  printf("Pass!---------------------------------------------------\n");

  printf("\n");

  raiseWages(wages, raises, wageSize);

  for (int i = 0; i < wageSize; i++) {
    printf("wages[%d] = %.2f = %.2f\n", i, wages[i], newWages[i]);
    assert(wages[i] - newWages[i] <= 0.000001);
    printf("Pass!---------------------------------------------------\n");
  }

  printArray(wages, wageSize);






  return 0;
}

float findMax(float array[], int n) {
  float max = array[0];

  for (int i = 1; i < n; i++) {
    if (array[i] > max) {
      max = array[i];
    }
  }

  return max;
}

float findMin(float array[], int n) {
  float min = array[0];

  for (int i = 1; i < n; i++) {
    if (array[i] < min) {
      min = array[i];
    }
  }

  return min;
}

float getMean(float array[], int n) {
  float sum = 0;

  for (int i = 0; i < n; i++) {
    sum += array[i]; 
  }

  return sum / n;
}

float getStd(float array[], int n) {
  float sum = 0;
  float mean = getMean(array, n);

  for (int i = 0; i < n; i++) {
    sum += pow(array[i] - mean, 2); 
  }

  return sqrt(sum / n);
}

void raiseWages(float wages[], float raises[], int n) {
  
  for (int i = 0; i < n; i++) {
    wages[i] += raises[i];
  }
}

void printArray(float array[], int n) {
  printf("{%.2f", array[0]);
  for (int i = 1; i < n; i++) {
    printf(", %.2f", array[i]);
  }
  printf("}\n");
}