isalnum |
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isalnum |
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isalnum |
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isalnum |
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int isalnum( int c )
int c; /* a character */
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Synopsis |
#include "ctype.h"
The isalnum function determines whether c is a letter or digit.
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Parameters |
c is an int, whose value must be representable as a char . |
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Return Value |
isalnum returns a non-zero value if c is a letter or digit, and 0 if not.
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See Also |
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