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How show 00156,00
float number = 156;
printf("%5.2f",number);
The output of the example above:
Output: 156.00
You need to pass the 0 flag for leading zeros, and the field width must be wide enough to have any leading characters printed. So you might try this:
printf("%08.2f", number);
The . verses , (aka, the "radix character") is determined from the LC_NUMERIC portion of the locale. See man setlocale for information on setting this programatically.
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After taking those values I have to store the values in two different arrays (say x and y)
So the only error I can immediately see is this
float* a = NULL;
a = new(nothrow)float;
which should be
float* a = new float[count];
Your version only allocates enough space for a single float when you really need space for count floats.
When you have code that isn't working, and you want to ask a question about it you really should say exactly what happens when you run the code. Doing this will help get you better answers.
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Assume only characters are in English and space is allowed
[a-zA-Z]+(\s|_)?[a-zA-Z]*
Playground:- https://regex101.com/r/1vM2H3/1
"Satish Patro" (accepted)
"Satish " (accepted, but shouldn't be accepted)
But, two things are not handled
if underscore is there, it should have letters at the end
So, "satish " not allowed
How to handle regex for matching length for min = 1, max = 20
How to handle those things
Why dont you try this?
((?=.*_)^[a-zA-Z_\s]{1,19}[a-zA-Z]$)|((?!.*_)^[a-zA-Z\s]{1,20}$)
No Space and UnderScore as first character
((?=.*_)^[a-zA-Z][a-zA-Z\s_]{1,18}[a-zA-Z]$)|((?!.*_)^[a-zA-Z][a-zA-Z\s]{1,19}$)
you need to specify that you want to match the whole string
^[a-zA-Z]+\s?[a-zA-Z]*$
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mission_id: a498094578a
mission_id: a493453456
mission_id: 498343454a
mission_id: 34534535345
From the above 4 mission_id's I need your help in writing a regex pattern which covers all the four mission_id but need to select only the numbers.
So one the first one - need to exempt 'a' and only the numbers.
mission_id:\s*\w?(\d*)\w?
That should work; maybe add any flags you need for parsing multiline text or whatever.
www.regexr.com is a great resource for trying out RegExps
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I want to pass values those are not equal zero (0). What is the best performing regex pattern for this ?
[^0]+
Means: Any character besides zero must occur at least once
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In Perl, I would like to determine if a given string is valid, the rule is to check if values exist between commas.
e.g. abc,abc is a valid case, but abc, or abc,,abc are not.
m/^\s*,|,\s*,|,\s*$/
matches all invalid combinations, assuming whitespace does not count as "values".