%% Schritt 1
fclose('all');
clear all
delete('test.mat');

test=magic(5);
save('test.mat','test','-v7.3');
clear all

%% Schritt 2
fid=fopen('test.mat','a');
fwrite(fid,magic(5));
fclose(fid);

%% Schritt 3
fid=fopen('test.mat');
testRead=fread(fid,[5,10])
fclose('all');

%% Schritt 4
load test.mat
testLoad=test