Source.cpp

#include <iostream>

using namespace std;

struct hit
{
	double depth;
	double hardness;
};

int main ()
{
	hit hit1,hit2,hit3,hit4;
	double mindepth = 0;
	double rc=0;
	const double space = 0.004;
	double rcdepth;
	double tolerance = 0; 
	double casedepth= 0 ;

	while (rc <= 0)
	{
		cout << "what is the desired case hardness? ";
		cin >> rc;

		if (rc <= 0)
		{
			cout << "please input a value greater than zero for the hardness " << endl;
		}
	}
	while (casedepth <= 0 && casedepth - tolerance <= 0)
	{
		cout << "what is the case depth of the part? ";
		cin >> casedepth;

		cout << "what is the tolerance of the part? ";
		cin >> tolerance;

		if ((casedepth - tolerance) < 0)
		{
			cout << "the minimum case depth is below zero please input proper values for case and tolerance" << endl;
		}

		if (casedepth < 0 )
		{
			cout << "the case depth you entered is below zero please input a proper casedetph" << endl;
		}

		if (tolerance < 0)
		{
			cout << " the tolerance you entered is less than zero please input a propertolerance " << endl;
		}


	}
	mindepth = casedepth - tolerance;
	hit3.depth = casedepth + tolerance;
	hit1.depth = hit3.depth - 2 * space;
	hit2.depth = hit3.depth - space;
	hit4.depth = hit3.depth + space;

	
	cout << "what is the value of hit 1? ";
	cin >> hit1.hardness;

	cout << "what is the value of hit 2? ";
	cin >> hit2.hardness;

	cout << "what is the value of hit 3? ";
	cin >> hit3.hardness;

	cout << "what is the value of hit 4? ";
	cin >> hit4.hardness;

	if (hit1.hardness > rc &&  hit2.hardness < rc)
	{
		rcdepth = hit1.depth + .004*(hit1.hardness - rc) / (hit1.hardness - hit2.hardness);
	}

	else if (hit2.hardness > rc &&  hit3.hardness < rc)
	{
		rcdepth = hit2.depth + .004*(hit2.hardness - rc) / (hit2.hardness - hit3.hardness);
	}

	else if (hit3.hardness > rc &&  hit4.hardness < rc)
	{
		rcdepth = hit3.depth + .004*(hit3.hardness - rc) / (hit3.hardness - hit4.hardness);

	}

	else
	{
		rcdepth = 1;
	}



	cout << " the case depth is " << rcdepth << endl ;

	if (rcdepth >= mindepth && rcdepth <= hit3.depth)
	{
		cout << " this part passes go ahead and pull that hold tag :) " << endl;
	}

	else if (rcdepth > hit3.depth)
	{
		cout << " this part is overcased please" << endl << "raise the temperature by redrawing the part at " << 300 + 30 * (hit3.hardness - rc) << endl;
	}

	else
	{
		cout << "this part is undercased" << endl;
	}

	cout << "hit 1 was taken at " << hit1.depth << endl;
	cout << "hit 2 was taken at " << hit2.depth << endl;
	cout << "hit 3 was taken at " << hit3.depth << endl; 
	cout << "hit 4 was taken at " << hit4.depth << endl; 

	
	return 0;
}