MATLAB Answers

How to create a loop until the condition is met?

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Glyzel Ann Madlangbayan
Glyzel Ann Madlangbayan on 21 Jul 2021
Edited: Jonas on 21 Jul 2021
I would like to create a loop wherein whenever the user input a date and the slot is already full, the loop would go back to the "choose date" again and again until the user find a date that is not full and still available.
%choose date
disp ('Choose on the following dates (MMDDYY)')
disp ('Aug0221 Aug0921 Aug1621 Aug2321 Aug3021')
date = input('Enter date of first dose (AugDDYY):', 's');
if date == 'Aug0221'
disp ('Date of first dose: Aug0221')
fprintf(1, '\n');
%assign a slot
slots_a1(index_a1)=1;
sum_a1=sum_a1+1;
if sum_a1 <= 2
%print reservation
disp ('COVID-19 Vaccine Reservation')
fprintf ('Name: %s\n', name);
fprintf ('Contact Number: %.f\n', contactno);
fprintf ('Address: %s\n', address);
disp('Vaccination Site: Aguinaldo Elementary School');
fprintf('Date of Vaccination: %s\n', date');
fprintf('Preferred Vaccine: %s\n', vaccine');
disp(['Slot number: ', num2str(index_a1)]);
%represent slot chart
slot_charta1=slots_a1
index_a1=index_a1+1;
else
fprintf('<strong>Sorry, your preferred date of vaccination is already full. Kindly choose another date that is available for you.</strong>\n');
fprintf(1, '\n');
end
elseif date == 'Aug0921'
disp ('Date of first dose: Aug0921')
fprintf(1, '\n');
%assign a slot
slots_a2(index_a2)=1;
sum_a2=sum_a2+1;
if sum_a2 <= 2
%print reservation
disp ('COVID-19 Vaccine Reservation')
fprintf ('Name: %s\n', name);
fprintf ('Contact Number: %.f\n', contactno);
fprintf ('Address: %s\n', address);
disp('Vaccination Site: Aguinaldo Elementary School');
fprintf('Date of Vaccination: %s\n', date');
fprintf('Preferred Vaccine: %s\n', vaccine');
disp(['Slot number: ', num2str(index_a2)]);
%represent slot chart
slot_charta2=slots_a2
index_a2=index_a2+1;
else
fprintf('<strong>Sorry, your preferred date of vaccination is already full. Kindly choose another date that is available for you.</strong>\n');
fprintf(1, '\n');
end
elseif date == 'Aug1621'
disp ('Date of first dose: Aug1621')
fprintf(1, '\n');
%assign a slot
slots_a3(index_a3)=1;
sum_a3=sum_a3+1;
if sum_a3 <= 2
%print reservation
disp ('COVID-19 Vaccine Reservation')
fprintf ('Name: %s\n', name);
fprintf ('Contact Number: %.f\n', contactno);
fprintf ('Address: %s\n', address);
disp('Vaccination Site: Aguinaldo Elementary School');
fprintf('Date of Vaccination: %s\n', date');
fprintf('Preferred Vaccine: %s\n', vaccine');
disp(['Slot number: ', num2str(index_a3)]);
%represent slot chart
slot_charta3=slots_a3
index_a3=index_a3+1;
else
fprintf('<strong>Sorry, your preferred date of vaccination is already full. Kindly choose another date that is available for you.</strong>\n');
fprintf(1, '\n');
end
elseif date == 'Aug2321'
disp ('Date of first dose: Aug2321')
fprintf(1, '\n');
%assign a slot
slots_a4(index_a4)=1;
sum_a4=sum_a4+1;
if sum_a4 <= 2
%print reservation
disp ('COVID-19 Vaccine Reservation')
fprintf ('Name: %s\n', name);
fprintf ('Contact Number: %.f\n', contactno);
fprintf ('Address: %s\n', address);
disp('Vaccination Site: Aguinaldo Elementary School');
fprintf('Date of Vaccination: %s\n', date');
fprintf('Preferred Vaccine: %s\n', vaccine');
disp(['Slot number: ', num2str(index_a4)]);
%represent slot chart
slot_charta4=slots_a4
index_a4=index_a4+1;
else
fprintf('<strong>Sorry, your preferred date of vaccination is already full. Kindly choose another date that is available for you.</strong>\n');
fprintf(1, '\n');
end
elseif date == 'Aug3021'
disp ('Date of first dose: Aug3021')
fprintf(1, '\n');
%assign a slot
slots_a5(index_a5)=1;
sum_a5=sum_a5+1;
if sum_a5 <= 2
%print reservation
disp ('COVID-19 Vaccine Reservation')
fprintf ('Name: %s\n', name);
fprintf ('Contact Number: %.f\n', contactno);
fprintf ('Address: %s\n', address);
disp('Vaccination Site: Aguinaldo Elementary School');
fprintf('Date of Vaccination: %s\n', date');
fprintf('Preferred Vaccine: %s\n', vaccine');
disp(['Slot number: ', num2str(index_a5)]);
%represent slot chart
slot_charta5=slots_a5
index_a5=index_a5+1;
else
fprintf('<strong>Sorry, your preferred date of vaccination is already full. Kindly choose another date that is available for you.</strong>\n');
fprintf(1, '\n');
end
end

Answers (1)

Jonas
Jonas on 21 Jul 2021
Edited: Jonas on 21 Jul 2021
add the follwing at the beginning
infLoop=1;
while infLoop
infLoop=0;
% your code
and that to the end of your code
fprintf('<strong>Sorry, your preferred date of vaccination is already full. Kindly choose another date that is available for you.</strong>\n');
fprintf(1, '\n');
infLoop=1; % add this
end
end
end % add this

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