isxdigit

Checks if the given character is a hexadecimal numeric character (0123456789 abcdefABCDEF

The behavior is undefined if the value of ch is not representable as unsigned char and is not equal to EOF

Parameters

Return value

Non-zero value if the character is an hexadecimal numeric character, zero otherwise.

Notes

isdigit and isxdigit

Example

#include <ctype.h>
#include <limits.h>
#include <stdio.h>
 
int main(void)
{
    for (int ndx = 0; UCHAR_MAX >= ndx; ++ndx)
        if (isxdigit(ndx))
            printf("%c", ndx);
    printf("\n");
}

0123456789ABCDEFabcdef

References

See also