#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()
{
	int rows = 0;
	float x = 0.0;
	float increment = 0.0;
	float ex = 0.0;
	float lo = 0.0;
	float sq = 0.0;


	int triesInMax = 0;
	int triesInError = 0;
	int const TRIESMAX = 5;
	int const TRIESERROR = (TRIESMAX - 1);
	int const TRIESDONE = 0;
	int const ROWMIN = 0;
	int const ROWMAX = 35;
	float const XMIN = 0.0;
	float const XMAX = 100.0;
	float const INCMIN = 0.0;


	triesInMax = TRIESMAX;
	triesInError = TRIESERROR;

	while(rows <= ROWMIN || rows > ROWMAX)
	{
		if(triesInMax <= triesInError && triesInMax > TRIESDONE)
		{
			cout << "The number you entered was invalid, TRY AGAIN: " << endl;
		}

		cout << "Enter the number of rows in the table to be produced " << endl << "The number of rows must be between " << ROWMIN << " and " << ROWMAX << endl;
		cin >> rows;
		triesInMax--;

		if(triesInMax <= TRIESDONE)
		{
			cerr << "ERROR, ATTEMPTED TOO MANY TIMES!";
			return 1;
		}
	}


	triesInMax = TRIESMAX;
	triesInError = TRIESERROR;


	while(x == XMIN || abs(x) > XMAX)
	{
		if(triesInMax <= triesInError && triesInMax > TRIESDONE)
		{
			cout << "The number you entered was too large, TRY AGAIN: " << endl;
		}

		cout << "Enter the starting X " << endl << "The starting x must satisfy |X| " << fixed << setprecision(0) << XMAX << endl;
		cin >> x;
		triesInMax--;

		if(x == XMIN)
		{
			break;
		}

		if(triesInMax <= TRIESDONE)
		{
			cerr << "ERROR, ATTEMPTED TOO MANY TIMES!";
			return 2;
		}

	}


	triesInMax = TRIESMAX;
	triesInError = TRIESERROR;


	while(increment <= INCMIN)
	{
		if(triesInMax <= triesInError && triesInMax > TRIESDONE)
		{
			cout << "The number you entered was invalid, TRY AGAIN: " << endl;
		}

		cout << "Enter the increment in X between successive rows " << endl << "The increment in X must be positive " << endl;
		cin >> increment;
		triesInMax--;

		if(triesInMax <= TRIESDONE)
		{
			cerr << "ERROR, ATTEMPTED TOO MANY TIMES!";
			return 3;
		}
	}


	cout << endl << endl << endl << endl << fixed << setw(9) << right << "X" << setw(17) << "exp(X)" << setw(16) << "log10(X)" << setw(15) << "sqrt(X)" << endl;


	while(rows > ROWMIN)
	{

		cout << fixed << right << setw(12) << setprecision(3) << x;

		ex = exp(x);
		cout << fixed << right << setw(15) << setprecision(2) << scientific << ex;

		if(x <= XMIN)
		{
			cout << fixed << right << setw(15) << "undef";
		}
		else
		{
			lo = log10(x);
			cout << fixed << right << setw(15) << setprecision(5) << lo;
		}

		sq = sqrt(abs(x));
		cout << fixed << right << setw(15) << setprecision(5) << sq;

		if(x <= XMIN)
		{
			cout << "i";
		}

		cout << endl;

		x += increment;

		rows--;

	}



	return 0;
}