HELP PLEASE!! How do I print matlab "1:5 multiply increases each line"

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This is my code
clc
fprintf (' SGD USD GBP EURO \n')
for (x= 1 : 5)
USD = 0.69 *2;
GBP = 0.49 *2;
EURO = 0.64 *2;
fprintf (' \n %d %.2f %.2f %.2f ' ,SGD ,USD ,GBP ,EURO);
end
My results
SGD USD GBP EURO
1 1.38 0.98 1.28
1 1.38 0.98 1.28
1 1.38 0.98 1.28
1 1.38 0.98 1.28
1 1.38 0.98 1.28 >>
I want the 2nd line to multiple by two, the thrid line to multiple by three... so on and so fourth...

Accepted Answer

Stephen23
Stephen23 on 18 Jan 2016
Edited: Stephen23 on 18 Jan 2016
Without any loops, using vectorized code. Note that you can simply add new currencies to the arrays and it will work perfectly (i.e. changing the code itself is not required):
% the arrays:
name = {'SGD','USD','GBP','EURO'};
xchg = [ 1, 0.69, 0.49, 0.64];
mult = [1:5,10,20]; % multiples
% the code:
fprintf('%8s',name{:})
fprintf('\n')
fmt = repmat('%8.2f',1,numel(name));
fprintf([fmt,'\n'],xchg(:)*mult)
prints this:
SGD USD GBP EURO
1.00 0.69 0.49 0.64
2.00 1.38 0.98 1.28
3.00 2.07 1.47 1.92
4.00 2.76 1.96 2.56
5.00 3.45 2.45 3.20
10.00 6.90 4.90 6.40
20.00 13.80 9.80 12.80
  3 Comments
Ken kaneki
Ken kaneki on 18 Jan 2016
Thanks Stephen, i'm slowly digesting it hahaha! I guess it's gonna take awhile...

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More Answers (1)

C.J. Harris
C.J. Harris on 18 Jan 2016
Do you mean like this?
clc
fprintf(' SGD USD GBP EURO \n')
for x= 1 : 5
USD = 0.69 * 2 * x;
GBP = 0.49 * 2 * x;
EURO = 0.64 * 2 * x;
SGD = x;
fprintf (' \n %d %.2f %.2f %.2f ' ,SGD ,USD ,GBP ,EURO);
end
Result:
SGD USD GBP EURO
1 1.38 0.98 1.28
2 2.76 1.96 2.56
3 4.14 2.94 3.84
4 5.52 3.92 5.12
5 6.90 4.90 6.40
  1 Comment
Ken kaneki
Ken kaneki on 18 Jan 2016
Thank you guys for your time and offered help to me, really really appreciated. The mistake i made was I didn't add the * x; !!

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