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Sep 11th, 2006, 8:12 AM
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#1 |
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Programmer
Join Date: Nov 2005
Location: Belfast
Posts: 34
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Calculating error
I've been learning pascal recently and i cant seem to do simple calculations correctly.
Example: program calculate;
var
cost: real;
people: integer;
begin
Writeln('How many people?');
Readln(people):
Writeln('How much per person?');
Readln(cost);
Writeln('Total cost: ', people*cost);
Readln;
end.Returns a value of 1.800000000Ex01 Any ideas? Thanks in advance. |
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Sep 11th, 2006, 8:45 AM
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#2 |
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Hobbyist Programmer
Join Date: Jun 2006
Location: Ireland
Posts: 152
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Depending on the input of course there is probably nothing wrong with that output, which has a value of 18 I believe.
I guess where you're having difficulty is in the representation of reals when printed, in this case in exponential or scientific format. Unfortunatly I don't know pascal to suggest a way of changing the output but I'm sure someone here will  .
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Sep 19th, 2006, 4:14 AM
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#3 |
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Programmer
Join Date: Nov 2005
Location: Belfast
Posts: 34
Rep Power: 0
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Yea found the problem.
Needed to show how many digits:decimal places i wanted to display: Writeln('Total cost: ', people*cost:6:2);Thanks anyway Eoin |
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