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

void readAPuzzle(int grid[] [9]);
void printGrid(int grid[] [9]);
void ValidPuzzle(int grid[] [9]);

int main()
{
    int grid[9][9];

    readAPuzzle(grid);
    printGrid(grid);
    ValidPuzzle(grid);
    system("pause");
    return 0;
}


void readAPuzzle(int grid[] [9])
{
    ifstream in_f;    
    in_f.open("soduku.txt");
    
    for (int r = 0; r < 9; r++)
    for (int c = 0; c < 9; c++)
    in_f >> grid[r] [c];
}



//Prints out the puzzle read from file (keep)
void printGrid(int grid[] [9])
{

cout<<"Your Puzzle Is Listed Below: "<<endl;
for (int r = 0; r < 9; r++)
{

    if ((r)%3 == 0)
    cout<<endl<<endl;
    for (int c = 0; c < 9; c++)
{

    cout << (grid[r] [c]) << " ";
    if ((c+1)%3 == 0)
    cout<<"   ";
    }
    cout<<endl;
    }
    cout<<endl;
}


//Check Validity Of Puzzle
void ValidPuzzle(int grid[] [9])
{
    int sum = 0;
    int nototest = 0;
    int count = 0;
    int box[9][9], no_to_test;
    

/* check rows */


for(int r=0;r<9;r++)
{
for(int c=0;c<9;c++)
{
no_to_test = c+1;
count=0;

for(int d=0;d<9;d++)
{
if(box[r][d]==no_to_test)
{
count++;
}
}
if(count>1)
{
cout << "Sudoku Violation: The digit " << no_to_test
<< " appears more than once on row no. " << r+1
<< endl << "Any digit (1-9) can appear only once in each row of the box. Try Again!";

}
}
}}