How can I round to 2 decimal places

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fernando piedra
fernando piedra 2020-8-27
回答： Walter Roberson 2020-8-27
So I am trying to round my number my current output is giving me 4 decimal places after the period 127.1234 im trying to make look like this 127.12. i have tried all formats of rounding and have multiple by 100 and divide by 100 nothing really seems to work.
oad a02_data.mat
sub_tot = sum(purchases(:,1));
sub_tot_0 = 0;
sub_tot_1 = 0;
sub_tot_2 = 0;
tax_tot_0 = 0;
tax_tot_1 = 0;
tax_tot_2 = 0;
L = length(purchases(:,1));
for ind = 1:L
if purchases(ind,2) == 0
sub_tot_0 = sub_tot_0 + purchases(ind,1);
tax_tot_0 = tax_tot_0 + tax_rates(1)*purchases(ind,1);
elseif purchases(ind,2) == 1
sub_tot_1 = sub_tot_1 + purchases(ind,1);
tax_tot_1 = tax_tot_1 + tax_rates(2)*purchases(ind,1);
elseif purchases(ind,2) == 2
sub_tot_2 = sub_tot_2 + purchases(ind,1);
tax_tot_2 = tax_tot_2 + tax_rates(3)*purchases(ind,1);
end
end
tot = sum([tax_tot_0,tax_tot_1,tax_tot_2,sub_tot_0,sub_tot_1,sub_tot_2]);
format short
disp('subtotal for purchases in tax rate 0')
disp(round(sub_tot_0*100)/100)
disp('Total taxes in category 0')
disp(round(tax_tot_0*100)/100)
disp('subtotal for purchases in tax rate 1')
disp(round(sub_tot_1*100)/100)
disp('Total taxes in category 1')
disp(round(tax_tot_1*100)/100)
disp('subtotal for purchases in tax rate 2')
disp(round(sub_tot_2*100)/100)
disp('Total taxes in category 2')
disp(round(tax_tot_2*100)/100)
disp('Subtotal is')
disp(round(sub_tot*100)/100)
disp('Total is')
disp(round(tot*100)/100);

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采纳的回答

Walter Roberson
Walter Roberson 2020-8-27
format short g
format long g
format bank

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