To Upper;To Lower

To Upper; To Lower

// giUpper.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>

using namespace std;

char ToUpperCase(char input);
char ToLowerCase(char input);

int main()
{
	// Lowercase to Uppercase
	for(int i = 97; i <= 122; ++i)
	{
		char lower = static_cast<char>(i);
		cout << ToUpperCase(lower)<< " ";
	}

	cout << endl;

	// UpperCase to Lowecase

	for(int i = 65; i <= 90; ++i)
	{
		char upper = static_cast<char>(i);
		cout << ToLowerCase(upper)<< " ";
	}

	cout << endl;
}

char ToUpperCase(char input)
{
	
	int inputNum = static_cast<int>(input);

	// Entered Lowecase

	if(inputNum >= 97 && inputNum <= 122)
	{
		int outputNum = inputNum - 32;
		char output = static_cast<char>(outputNum);
		return output;
	}

	// Entered Uppercase

	else if(inputNum <= 90 && inputNum >= 65)
	{
		int outputNum = inputNum;
		char output = static_cast<char>(outputNum);
		return output;
	}
	else
	{
		return '/0';
	}
}

char ToLowerCase(char input)
{
	
	int inputNum = static_cast<int>(input);

	//Entered Uppercase:

	if(inputNum >= 65 && inputNum <= 90)
	{
		int outputNum = inputNum + 32;
		char output = static_cast<char>(outputNum);
		return output;
	}

	//Entered Lowecase

	else if(inputNum >= 97 && inputNum <= 122)
	{
		int outputNum = inputNum;
		char output = static_cast<char>(outputNum);
		return output;
	}
	else
	{
		return '/0';
	}
}