simple antivirus program

#include <stdlib.h>
#include <stdio.h>
int main ( int argc, char** argv )
{
  FILE *input;
  int ch;
  int fileTested[11];
  int signature[] = {8B,EF,33,C0,BF,00,00,00,00,03,FD,B9};  /*hard coded virus signature*/

  if ( argc != 2 )
  {
 fprintf( stderr, "Need to enter file to scan \n");
 return( EXIT_FAILURE );
  }

  if ( (input = fopen( argv[1], "rb")) == NULL ) /* open file in binary mode to avoid end of line characters*/
  {
 perror( argv[1] );
 return( EXIT_FAILURE );
  }


  while ( (ch = fgetc(input)) != EOF )/*commence loop*/
  {
 input = fileTested[];     /*put bytes into array to compare to virus signature array*/

 if (fileTested==signature)  /*do comparison*/

   printf("This file contains a virus\n"); /*tell if virus signature is present*/

 else
   /*if virus signature isn't found, print results*/
   printf("This file doesn't contain a virus\n");
  }

  if ( fclose( input ) == EOF )
  {
 perror( argv[1] );
 return( EXIT_FAILURE );
  }

  return( EXIT_SUCCESS );
}