Read float value from file c++

BMR
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i have a text file of values

133.25 129.40 41.69 2.915

when i read it:

fscanf(File,"%f",&floatNumber[i]);

i get thes values

1.3325000000000000e+002, 1.2939999389648437e+002, 4.1689998626708984e+001 2.9149999618530273e+000

the first value is ok but the other three values why they are different ??

1 answer

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The reason of difference is floating point precision. Not all decimal floating point values can be represented in machine arithmetic precisely.

berak ( 2013-02-17 01:39:53 -0600 )edit

Asked: 2013-02-16 11:19:56 -0600

Seen: 870 times

Last updated: Feb 16 '13