External quality

This is the quality of the product that is perceived by the users of the product. This includes the stability of the product, the ease of use of it, the interaction design and the way it conforms to the requirements

Internal quality

This is the quality of the source code, the quality of the architecture, the quality of the development process around the product, etc. Anything that is not perceivable by the users of the software.

    	bool IsBukva(char symbol) {
    	  switch(symbol) {
    	    case'a':return 1;break;
    	    case'b':return 1;break;
    	    case'c':return 1;break;
    	    case'd':return 1;break;
    	    case'e':return 1;break;
    	    case'f':return 1;break;
    

Or Regex.IsMatch(input, "[A-Za-z0-9]")

Not only code

      <table cellspacing="0" width=960 cellpadding="0" 
      border=0 align=center class=txt>
      <tr><td>
      <div style="position: relative; width: 960px; height: 190px; 
      top: 0px; z-index: 999;">
    

      void get_tomorrow_date( struct timeval *date )
      {
        sleep( 86400 ); // 60 * 60 * 24
        gettimeofday( date, 0 );
      }
    

      res = nil
      pics = self.pictures.not_price.all
      if pics && pics.any?
        res = pics.first
      end
    

Or res.last

      - (void) closeApp {
         int closer = 1 / 0;
      }
    

      $('div').each(function () {
        if ($(this).attr('id') == 'blok') {
          $(this).html('');
        }
      });
    

Or $('#blok').html('')

        if self.from <= Date.today
          if self.to
            if self.to >= Date.today
              true
            else
              false
            end
          else
            true
          end
        else
          false
        end
    

      $week['monday'] = date("d.m.Y", $week_start);
      $week['tuesday'] = date("d.m.Y", $week_start + 1 * 86400);
      $week['wednesday'] = date("d.m.Y", $week_start + 2 * 86400);
      $week['thursday'] = date("d.m.Y", $week_start + 3 * 86400);
      $week['friday'] = date("d.m.Y", $week_start + 4 * 86400);
      $week['saturday'] = date("d.m.Y", $week_start + 5 * 86400);
      $week['sunday'] = date("d.m.Y", $week_start + 6 * 86400);
    

      if city.present?
        if city.city.present?
          city = city.city
        else
          city = "NIL"
        end
      else
        city = "NIL"
      end
    

      int p,k,l,i,j,d,q,R,t,r;
      S6:    k+=d; if (k==l) goto S13; else x[k]=x[j];c[k]=c[j];
      S7:    j-=1; r-=1; if (r>0) goto S6; else goto S12;
      S8:    k+=d; x[k]=x[j]; c[k]=c[j];
      S9:    j-=1; r-=1; if (r>0) goto S3;
      S10:   k+=d; if (k==l) goto S13; else x[k]=x[i];c[k]=c[i];
      S11:   i+=1; q-=1; if (q>0) goto S10;
      S12:   q=p; r=p; d=-d; t=k; k=l; l=t; if (j-i<p) goto S10; else goto S3;
    

Full version

      void loop() {
        message(false);
        message(true);
        message(false);
        message(true);
        message(false);
        message(false);
      }
    

      function newuser($username){
        return;
        /*
          ДВАДЦАТЬ СТРОК КОДА
        */
        //не пойму почему не работает:ФИО Программиста
      }
    

    # заменяем в разделитель на запятую в поле "Количество"
    $row[4] =~ s/\./,/;
    # лишние нули красим цветом фона
    $row[4] =~ s/,000/.000<\/font>/;