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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Determine-if-a-string-is-numeric/SNOBOL4/determine-if-a-string-is-numeric.sno Normal file
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define('nchk(str)') :(nchk_end)
nchk convert(str,'real') :s(return)f(freturn)
nchk_end
* # Wrapper for testing
define('isnum(str)') :(isnum_end)
isnum isnum = 'F'; isnum = nchk(str) 'T'
isnum = isnum ': ' str :(return)
isnum_end
* # Test and display
output = isnum('123')
output = isnum('123.0')
output = isnum('123.')
output = isnum('-123')
output = isnum('3.14159')
output = isnum('1.2.3')
output = isnum('abc')
output = isnum('A440')
end