isxdigit in C

The isxdigit() function is one of the ctype library Function available in C programming. This is used to check the given character is a hexadecimal or not. In this article we will show you, How to use isxdigit in C Programming language with example.

Before we get into the example, the basic syntax of the isxdigit in C programming language is as shown below.

C isxdigit Function syntax

Below function accept a character as the parameter, and find whether that character is a hexadecimal or not.

isxdigit(char)

isxdigit in C Programming Example 1

The isxdigit function find whether user given character is a hexadecimal character or not.

//Example for isxdigit in C Programming
#include <stdio.h>
#include <ctype.h>

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

OUTPUT

C isxdigit Example 2

This C program allows the user to enter any character, and check whether the given character is a hexadecimal or not using the isxdigit function.

//Example for isxdigit in C Programming
#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;
}

OUTPUT

Let me enter another character