# How to display pi symbol in the output?

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GULZAR on 24 Aug 2023
Commented: Hiro Yoshino on 24 Aug 2023
how to display pi symbol instead of numerical value in the out of the given code
clc; clear all; close all;
nA=3.3;nB=2.25;
% nB=3.3;nA=2.25;
S=sign(1-(nA^2/nB^2));
x=-1i*log(S);
if x>0
disp('Zak Phase of 0th band = ')
disp(pi)
else
disp('Zak Phase of 0th band = ')
disp('0')
end
Zak Phase of 0th band =
3.1416
Fangjun Jiang on 24 Aug 2023
sprintf('\x3c0')
ans = 'π'
double('π')
ans = 960

Dyuman Joshi on 24 Aug 2023
You can either use the symbolic math toolbox or print the symbol via the unicode value -
nA=3.3;nB=2.25;
% nB=3.3;nA=2.25;
S=sign(1-(nA^2/nB^2));
x=-1i*log(S);
if x>0
disp('Zak Phase of 0th band = ')
%pi as a symbolic number
disp(sym(pi))
%print the symbol via unicode value
fprintf('%c', 960)
else
disp('Zak Phase of 0th band = ')
disp('0')
end
Zak Phase of 0th band =
π
π

Nathan Hardenberg on 24 Aug 2023
Edited: Nathan Hardenberg on 24 Aug 2023
You can display pi as a sybolic
disp(sym(pi))
π
Or you can use a π-character (𝜋 or π).
disp("𝜋")
𝜋
disp("π")
π

Hiro Yoshino on 24 Aug 2023
S = sprintf('Zak Phase of 0th band = %c',960);
disp(S);
Zak Phase of 0th band = π
Hiro Yoshino on 24 Aug 2023
Please refer to the list of Unicode for your help:List of Unicode characters

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