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ISALNUM.C
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Text File
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1987-10-04
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256b
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9 lines
/*
** return 'true' if c is alphanumeric
*/
isalnum(c) int c; {
return ((c<='z' && c>='a') ||
(c<='Z' && c>='A') ||
(c<='9' && c>='0'));
}