What is the proper format string for float?
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I would like to print a float without unnecessary characters. 0.2, 1.25, 0.02, but in case of lot of digits, I would like to cut the last digits: 1.234 to 1.23 %f, %.2f is not good I think
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Dasharath Gulvady
2015-5-29
0 个投票
If you are looking for a way to round off the decimal values, see the below thread:
There is no formatting option that does exactly what you want. You could switch to using '%g' instead of '%f', this does not print trailing zeros, but the precision is then the number of significant digits instead of the number of digits after the decimal point. Furthermore '%g' switches to exponential notation if the magnitude of the number is too big or too small.
For the examples, you've given:
sprintf(n, '%.4g')
works
1 个评论
Walter Roberson
2015-6-10
%.2g rather than %.4g for the posted requirements.
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2015-6-10
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