isxdigit in C

The C isxdigit function checks whether the given character is hexadecimal or not. The below isxdigit function accepts a character as the parameter and finds whether it is hexadecimal or not.

isxdigit(char)

isxdigit in C Programming Example

The isxdigit function finds whether the user-given character is hexadecimal or not.

#include <stdio.h>
#include <ctype.h>

int main()
{
    char ch = '5';
    
    if(isxdigit(ch))
    {
        printf("\nYou have entered a Hexadecimal \n");
    }
    else
    {
        printf("\n %c is not a Hexadecimal", ch);
    }
    return 0;
}

You have entered a Hexadecimal

Example 2

This program allows the user to enter any letter. Next, it checks whether the given character is hexadecimal or not using the C Programming function.

#include <stdio.h>
#include <ctype.h>

int main()
{
    char ch;
    
    printf("Please Enter Any Valid Character: ");
    scanf("%c", &ch);
    
    if(isxdigit(ch))
    {
        printf("\nYou have entered a Hexadecimal Character \n");
    }
    else
    {
        printf("\n %c is not a Hexadecimal Character", ch);
        printf("\n I request you to enter a Hexadecimal Character \n");
    }
    return 0;
}

Let me enter another character.

Please Enter Any Valid Character: #

 # is not a Hexadecimal Character
 I request you to enter a Hexadecimal Character