#define _CRT_SECURE_NO_WARNINGS
#define SIZE 10
#include <math.h>
#include <stdio.h>

void pheobe(float arr[SIZE], float *mean, float *var, float *sd);

int main()
{
	int i;
	float a[SIZE], mean , var, sd ;
	puts("Welcome to this crazy method data calculator");
	do {
		mean = 0;
		var = 0;
		sd = 0;
		puts("Please enter the values of the array");
		for (i = 0; i < SIZE; i++){
			scanf("%f", &a[i]);
			}
		pheobe( &a[SIZE], &mean, &var, &sd);
		printf("The average of the data set is %.3f\n", mean);
		printf("The variance of the data set is %.3f\n", var);
		printf("The standard deviation of the data set is %.3f\n", sd);
		puts("Would you like to try this again? Hit 0 for no");
		scanf("%d", i);
	} while (i != 0);
}

void pheobe(float arr[SIZE], float *mean, float *var, float *sd)
{
	int i;
	float var1=1, x=0;
	for (i = 0; i < SIZE; i++){
		x += arr[i] ;
	}
	*mean = x / SIZE;
	for (i = 0; i < SIZE; i++){
		var1 *= pow(arr[i] - *mean, 2);
		}
	*var = var1 / SIZE;
	*sd = sqrt(*var);
	}