fixed number of decimals
 

Hi,

If I want to print several numbers, say 12.3, 24.038, 154.9181, 0.4778--anyway, just all kinds of numbers, how can I print all of them with fixed number of decimals, say two decimals, that is, the output will be: 12.30, 24.03, 154.91, 0.47... ? The "setprecision(...)" doesn't work because it specifies the number of "significant" digits, rather than the number of digits after the decimal point.

Thank you in advance!

Re: fixed number of decimals
 

cout << fixed << setprecision (2);

try that

Re: fixed number of decimals
 

(seeing as I can't delete a post, to prevent redundancy, I'll give an alternate solution)

Hi, in the case of setprecision() not working, try the following:

cout.setf(ios::fixed); // prevents e-notation
cout.setf(ios::showpoint); //always shows decimal point
cout.precision(2); // with 2 being the number of decimals

using that, here's what happened in my test program:

4 inputs
1.234
1.23
123.456
1234

and then just used cout to put them on the screen
1.23
1.23
123.46 // rounded
1234.00

See if that works for you

~J

Re: fixed number of decimals
 

Thank you both! Both work. The "fixed" is simpler to use. For the second way, is that it applies to all the cout statements after the statement?

Re: fixed number of decimals
 

That is my understanding as well, however if I recall you can make exceptions but I may be wrong there.

~J