/*
    This program written by:
    Zachary Easterbrook
    Date: 27-10-2010
    Lecture: 60-140-1
    Lab: 60-140-52
    Student ID: 103163420

    I confirm that I will keep the content of this assignment/examination confidential.
    I confirm that I have not received any unauthorized assistance in preparing for or
    doing this assignment/examination. I confirm knowing that a mark of 0 may be assigned
    for copied work.
*/

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

// I felt like doing this.
#define PI 3.142

// Global input variables
int qnt1, qnt2, qnt3, qnt4;
double thick1, thick2, thick3, thick4;
double inner_d1, inner_d2, inner_d3, inner_d4;
double outer_d1, outer_d2, outer_d3, outer_d4;
double density1, density2, density3, density4;

// Global output variables
double area1, area2, area3, area4;
double weight1, weight2, weight3, weight4, total_weight;

// Function prototypes
double WasherWeight(void);
double CircleArea(void);
void PrintWeights(void);

int main()
{
	
	
	printf("Enter the quantity, thickness, density, inner diameter, and outer diameter of Washer Type A :\n");
	scanf("%d %lf %lf %lf %lf", &qnt1, &thick1, &density1, &inner_d1, &outer_d1);
	printf("Enter the same for type B : \n");
	scanf("%d %lf %lf %lf %lf", &qnt2, &thick2, &density2, &inner_d2, &outer_d2);
	printf("Enter the same for type C : \n");
	scanf("%d %lf %lf %lf %lf", &qnt3, &thick3, &density3, &inner_d3, &outer_d3);
	printf("Enter the same for type D : \n");
	scanf("%d %lf %lf %lf %lf", &qnt4, &thick4, &density4, &inner_d4, &outer_d4);

	CircleArea();

	WasherWeight();

	total_weight = weight1 + weight2 + weight3 + weight4;	

	PrintWeights();
}

double CircleArea(void)
{
	area1 = (pow((outer_d1 / 2), 2) * PI) - (pow((inner_d1 / 2), 2) * PI);
	area2 = (pow((outer_d2 / 2), 2) * PI) - (pow((inner_d2 / 2), 2) * PI);
	area3 = (pow((outer_d3 / 2), 2) * PI) - (pow((inner_d3 / 2), 2) * PI);
	area4 = (pow((outer_d4 / 2), 2) * PI) - (pow((inner_d4 / 2), 2) * PI);
}

double WasherWeight(void)
{
	weight1 = qnt1 * thick1 * density1 * area1;
	weight2 = qnt2 * thick2 * density2 * area2;
	weight3 = qnt3 * thick3 * density3 * area3;
	weight4 = qnt4 * thick4 * density4 * area4;
}

void PrintWeights(void)
{
	printf("WasherType\tQty\tThickness   Density\tWeight\n");
	printf("A\t\t%d\t%.2lf\t    %.2lf\t%.2lf\n", qnt1, thick1, density1, weight1);
	printf("B\t\t%d\t%.2lf\t    %.2lf\t%.2lf\n", qnt2, thick2, density2, weight2);
	printf("C\t\t%d\t%.2lf\t    %.2lf\t%.2lf\n", qnt3, thick3, density3, weight3);
	printf("D\t\t%d\t%.2lf\t    %.2lf\t%.2lf\n", qnt4, thick4, density4, weight4);
	printf("*********************************************** %.2lf\n", total_weight);
}