Help with C style string

My program here is suppossed to read from a file a bunch of characters using c-style strings. The File contains a paragraph with 1 word per line. I got it to read it and store it into a multi dimentional array ok, but im also suppossed to not store duplicate words. I tried and i can't figure out why what im doing isn't working. If any one could please help me that would be Great! Thanks Heres my code. . .

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

int main()
{
fstream inputFile("input3.txt",ios::in);//open file

if (!inputFile)
{
cerr<< "File could not be opened" << endl;
exit(1);
}

char c,ary[90][12],checkary[12];
int col=0,row=0,x;

for(row=0;row<90;row++) //Nulls out every element of array
{
for(col=0;col<12;col++)
{
ary[row][col] = '\0';
}
}

for(col=0;col<12;col++) //Nulls out every element of check array
{
checkary[col] = '\0';
}

row = 0;
col = 0;
while(!inputFile.eof())//reads each character from file, then places it in array.
{
inputFile.get(c);
if( c != '\0')
{
ary[row][col]=c;
col++;
}
else
{
col=0;
row++;

for(col=0;col<12;col++)
{
checkary[col]=ary[row][col];
cout<<checkary[col];
cout<<ary[row][col];
}
//After word is stored look to see if its already there
int checkcol,checkrow;
for(checkrow=0;checkrow<86;checkrow++)
{
checkcol=0;
while((checkary[checkcol]==ary[checkrow][checkcol])||(checkary[checkcol]!='\0'))
checkcol++;
if(checkcol>=11)
{
row--;
col=0;
for(checkcol=0;checkcol<12;checkcol++)//Nulls out what was put into that row
{
ary[row][checkcol]='\0';
}
// x=0;//FALSE
break;
}
else
row++;
col = 0;
// x=0;
}//end for
}//end else
}//end while
inputFile.close();

for(row=0;row<86;row++) //Prints array
{
for(col=0;col<12;col++)
{
cout<< ary[row][col];
}
}//end print
cout<<"\n";
}//end main

what do u mean by this:
inputFile.get(c);
if( c != '\0')
{
ary[row][col]=c;
col++;
}
else
{ ..... }// these codes are never executed! cos c=='\0' never succeed!