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// functions for the project written by Jacob Knox
// email [email protected]
#include "header.h"
#include <string>
#include <iostream>
using namespace std;
void DisplayMenu(int& choice)
{
const string menu =
"\t\t\t--MENU--\n\n\
\t 1. Is the value positive or negative\n\
\t 2. Is the value odd or even\n\
\t 3. How many digits does the value have\n\
\t 4. See the digit at a specifed position\n\
\t 5. Show additon table\n\
\t 6. Show multiplication table\n\
\t 7. Exit program\n\n";
cout << menu;
cout << "Input Menu Choice: ";
cin >> choice;
}
void ProcessMenuChocie(int chocie, int& value)
{
int digits = 0;
switch (chocie)
{
case 1:
IsPosNeg(value);
break;
case 2:
case 3:
digits = FindNumDigits(value);
cout << value << " has " << digits << " digits.\n";
break;
case 4:
case 5:
DisplayAdditonTable();
break;
case 6:
case 7:
return;
default:
cout << "Unknown Menu Choice. Please input a number between 1 and 6";
return;
}
}
void IsPosNeg(int value)
{
if (value == 0)
{
cout << value << " is not positive or negative.\n";
}
else if (value < 0)
{
cout << value << " is negative.\n";
}
else
{
cout << value << " is positve.\n";
}
}
int FindNumDigits(int value)
{
int digits;
// truncated log of an int is the number of digits
digits = (int) log(value);
return digits;
}
void DisplayAdditonTable()
{
cout << "The addition table for numbers 0-12:\n";
for (int i = 0; i <= 12; i++)
{
for (int j = 0; j <= 12; j++)
{
// if block makes it so numbers are spaced evenly
int sum = i + j;
if (sum >= 10)
{
cout << sum << " ";
}
else
{
cout << sum << " ";
}
}
cout << "\n";
}
}
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