create a calculator using arithmetic operators

a=input(prompt,'s');
c=2;
d=3;
h=6;
if a=='+'
    e=c+d;
    e
else 
    e=c-d;
    e
end

what is wrong with this addition code?

Answer 1

[KSSV]

prompt = 'Enter sign:' ; 
a=input(prompt,'s');
c=2;
d=3;
h=6;
if strcmp(a,'+')
    e=c+d;
    e
else 
    e=c-d;
    e
end

[abdul rehman]

Thank you so much