//-----------------------------------
//
// James Waltersdorf
// Prof. Ames
// 
// Assignment 4
// Multiplication Table
//
//----------------------------------


#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;


//=================== Main Function =================


int main()
{
 
// Variables

int n,		//size of table
    i,		//row number
    j;		//multiplier


//======================= Input ===================


cout <<"\n\n Enter the desired size of the table ===> ";
cin >> n;

cout << endl;


//================= Input Validation ==================


while(n < 2 || n > 20)
{
   cout <<"\n\n*******************%%{ERROR}%%************************"; 
   cout <<"\n\n                   %%{ERROR}%%                        "; 
   cout <<"\n\n*******************%%{ERROR}%%************************"; 
   cout <<"\n\n   ~~~!!!-Number must be between 2 & 20-!!!~~ \n";
   cout <<"\n Please re-enter the desired size of the table ===> ";
   cin >> n;

   cout <<endl;
}

//================= Heading Alignment =================


 if(n > 6)
 {
   cout <<setw(n + n - 4)<< n << " x " << n <<" Multiplication Table\n";
   cout <<"\n   |";
 }
    else 
    {  
      cout << n << " x " << n <<" Multiplications Table\n\n";
    }


//============== Some Loops ==================


for(i = 1; i <= n; i++)
{ 
  cout <<setw(5) << i;
}

cout <<setw(5) <<"\n---|--";

for(i = 1; i <= n; i++)
{
  cout <<"-----";
}
 
for(i = 1; i <= n; i++)
{
  cout << endl <<setw(2) << i << " |";
  for(j = 1; j <= n; j++)
      cout <<setw(5)<< i * j;
}

cout <<setw(5) <<"\n---|--";

for(i = 1; i <= n; i++)
{
  cout <<"-----";
}

cout << endl << endl;

return 0;
}