how to get results from and how to call functions from other functions?

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i have try a source code, but why in work space i have only ans,

how if i nead sakita in my workspace

function [sakita]=gambar1
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
       a=imread('D:\Deniel Data\SKRIPSI\APLIKASI\sel sakit\sakita.jpg');
       b=a;
       c=rgb2gray(b);
       d=imresize(c,[100 100]);
      data=d;
     pathname = 'D:\Deniel Data\SKRIPSI\APLIKASI\Gambar_Grayscale\';
    % mkdir(pathName);
  imwrite(data,[pathname, 'grayscale','.jpg']);
mm=10;
r=d;
m=fspecial('unsharp');
x=imfilter(r,m);
      data=x;
     pathname = 'D:\Deniel Data\SKRIPSI\APLIKASI\Hish_Pass_Filter\';
    % mkdir(pathName);
  imwrite(data,[pathname, 'HPV','.jpg']);
  [r,c]=size(x);
  max=0;
  min=0;
  for j=2:r-1
      for i=2:c-1
          p=i-1;
          q=i+1;
          a=j-1;
          b=j+1;
          d1=abs(x(j,i)-x(j,p));
          d2=x(j,i)-x(j,q);
          e1=x(j,i)-x(a,i);
          e2=x(j,i)-x(b,i);
          f1=x(j,i)-x(a,p);
          f2=x(j,i)-x(b,q);
          g1=x(j,i)-x(a,q);
          g2=x(j,i)-x(b,p);
          if (d1 < 0)
              d1=d1*(-1);
          end
          if (d2 < 0)
              d2=d2*(-1);
          end
          if (e1 < 0)
              e1=e1*(-1);
          end
          if (e2 < 0)
              e2=e2*(-1);
          end
            if (f1 < 0)
                f1=f1*(-1);
            end
            if (f2 < 0)
                f2=f2*(-1);
            end
            if (g1 < 0)
                g1=g1*(-1);
            end
            if (g2 < 0)
                g2=g2*(-1);
            end
            if (d1 >= mm) && (d2 >= mm)
                x(j,i)=255;
            elseif (e1 >= mm) && (e2 >= mm)
                x(j,i)=255;
            elseif (f1 >= mm) && (f2 >= mm)
                x(j,i)=255;
            elseif (g1 >= mm) && (g2 >= mm)
                x(j,i)=255;
            else
                x(j,i)=0;  
            end
        end
    end
      e=x
     data=e;
     pathname = 'D:\Deniel Data\SKRIPSI\APLIKASI\Gambar_Canny\';
    % mkdir(pathName);
  imwrite(data,[pathname, 'Canny','.jpg']);
  sakita=reshape(x,[10000 1])
data=sakita;
   pathname = 'D:\Deniel Data\SKRIPSI\APLIKASI\ReShape\';
  % mkdir(pathName);
imwrite(data,[pathname, 'sakita','.bmp']);
   %sakita=reshape(data,[10000 1]);