Error Correction

// Error Correction.cpp : Defines the entry point for the console application.

//

 

#include "stdafx.h"

 

 

int _tmain(int argc, _TCHAR* argv[])

{
                int
n,i=0,j=0,A[100][100],sum1=0,sum2=0,rc,cc,tru=0,rd,cd;
                while(scanf("%d",&n))
                {
                                if(n!=0)
                                {
                                                rc=0;cc=0;tru=0;
                       
                        for(i=0;i<n;i++)
                       
                        {
                         
                                      for(j=0;j<n;j++)
                                                                {
                                                                                scanf("%d",&A[i][j]);
                                                                }
                                                }
                      
                         for(i=0;i<n;i++)
                       
                        {
                           
                                    sum1=0;
                                                                sum2=0;
                                                                for(j=0;j<n;j++)
                                                                {
                       
                                                        sum1=sum1+A[i][j];
                                                                                sum2=sum2+A[j][i];
                                                                }
                                                                if(sum1%2!=0
|| sum2%2!=0)
                                                                {
                                                                                if(sum1%2!=0)
                                                                                {
                                                                                                rc++;
                                               
                                                rd=i;
                                                                                }
                                                                                else
if(sum2%2!=0)
                                                                                {
                                                                                                cc++;
                                               
                                                cd=i;
                                                                                }
                                                                                if(rc>1
|| cc>1)
                                                                                {
                                                                                                tru=1;
                                               
                                                break;
                                                                                }                                           

                          
                                     }
                      
                         }
                       
                        if(rc==0
&& cc==0)
                       
                        {printf("OK\n");}
                       
                        else
if(tru==1)
                       
                        {printf("Corrupt\n");}
                       
                        else
if(rc!=cc)
                       
                        {printf("Corrupt\n");}
                       
                        else
if(rc==1 && cc==1)
                      
                         {
                         
                                      printf("Change bit
(%d,%d)\n",rd+1,cd+1);
                                                }           
                                }
                                else
                                {return 0;}
                }
}

4
1 0 1 0
0 0 0 0
1 1 1 1
0 1 0 1
OK

4
1 0 1 0
0 0 1 0
1 1 1 1
0 1 0 1
Change bit (2,3)

4
1 0 1 0
0 1 1 0
1 1 1 1
0 1 0 1
Corrupt