$student = (
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
);
push @students, $student;

##</code><code>##

$student = {
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
};
push @students, $student;

##</code><code>##

%student = (
    studentName => 'John',
    studentSurname=>'Something',
    studentID=>'9534',
    age=>'12'
);
push @students, \%student;