Continuous sequence

Problem solving with programming: Continuous sequence
Given a sequence of 0 and 1s. Check if contains a continuous sequence of 0/1 of length 7.
For example see some input output combinations

Input                             Output
------------------------------------------
10001010010011                    NO
1000000001100                     YES
000111111111110                   YES

Your program should accept a sequence of 0, 1s as input and print YES of there is a sequence of 7 0/1s in it or NO if does not contain such a sequence.

bool containsSequence(string input)


{


 if( input.size() < 7 )


 {


  return false;


 }


 else


 {


  int i;


  bool dangerous = false;


  int ccount = 0;


  int state = -1; //initial state


  for( i = 0; i < input.size(); i++ )


  {


   if( input[i] == '0' )


   {


    if( state != 0 ) //sequence broken


    {


     ccount = 1; //reset count


     state = 0;  //change the state


    }


    else //sequence continues


     ccount++;


   }


   else


   {


    if( state != 1 )//sequence broken


    {


     ccount = 1;


     state = 1;


    }


    else


     ccount++;


   }


   if( ccount == 7 ) //sequence found


   {


    return true;


   }


  }


  return false;


 }

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