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rar

Mon Sep 28, 2009 8:32 pm


Limiting Decimal Places

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What is the syntax to limit a decimal to 2 decimal places?

Meaning if I'm reading output using "%d" or "%f" how do I modify it to limit to 2 decimal places?


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bbi5291

Mon Sep 28, 2009 8:46 pm


Re: Limiting Decimal Places

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What is the syntax to limit a decimal to 2 decimal places?

Meaning if I'm reading output using "%d" or "%f" how do I modify it to limit to 2 decimal places?

You don't read output, you write it.
%d is for integers, so I don't know what you mean by 2 decimal places.
You would use the format specifier %.2f to print a double to two decimal places.


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DemonWasp

Mon Sep 28, 2009 8:47 pm


RE:Limiting Decimal Places

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[url=http://en.wikipedia.org/wiki/Printf]You'd be surprised how much you can learn by typing "wiki printf" into your browser.


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saltpro15

Tue Sep 29, 2009 12:19 pm


RE:Limiting Decimal Places

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printf:


double n = 3.141592;
printf ("%.4f", n); //output to 3 decimals


cout:


double n = 3.141592;
cout.setf(ios_based::fixed);
cout.precision(4);
cout