1 - WAP to implement your own isxdigit() function

Description:

c-type library functions check whether ch, which must have the value of an unsigned char or EOF, falls into a certain character class according to the current locale.

isxdigit() - checks for a hexadecimal digit i.e. given character is between '0' - '9' or 'a' - 'f' or 'A' - 'F'

Pr-requisites: -

Functions

Objective: -

To understand the concept of

Functions

Inputs: - An ASCII character Outputs: - 0 or non-zero value based on condition success or failure Sample execution: - Test Case 1: Enter the character: a Entered character is an hexadecimal digit Test Case2: Enter the character:3 Entered character is an hexadecimal digit Test Case 3: Enter the character:G

Entered character is not an hexadecimal digit

requested file:

#include

int is_xdigit(int);

int main() { char ch; short ret; printf("Enter a character: "); scanf("%c", &ch); ret = is_xdigit(ch); /* Based on the return value of the function print the message */ return 0; }

//

2.

2 - WAP to implement your own islower() function

Description:

c-type library functions check whether ch, which must have the value of an unsigned char or EOF, falls into a certain character class according to the current locale.

islower() - checks for a lower case alphabet whether entered character is between 'a' to 'z'.

Pr-requisites: -

Functions

Objective: -

To understand the concept of

Functions

Inputs: -

An ASCII character

Outputs: -

0 or non-zero value based on condition success or failure

Sample execution: - Test Case 1: Enter the character: a Entered character is lower case alphabet Test Case 2: Enter the character:3 Entered character is not lower case alphabet

requested file:

#include

int my_islower(int);

int main() { char ch; int ret; printf("Enter the character:"); scanf("%c", &ch); ret = my_islower(ch); /* Based on return value, print whether ch is lower case alphabet or not */ }

//

3 - WAP to implement your own ispunct() function

Description:

c-type library functions check whether ch, which must have the value of an unsigned char or EOF, falls into a certain character class according to the current locale.

ispunct() - checks for any printable character which is not a space or an alphanumeric character.

Pr-requisites: -

Functions

Objective: -

To understand the concept of

Functions

Inputs: -

An ASCII character

Outputs: -

0 or non-zero value based on condition success or failure

Sample execution: - Test Case 1: Enter the character: a Entered character is not punctuation character Test Case 2: Enter the character:$ Entered character is punctuation character

requested file:

#include

int my_ispunct(int);

int main() { char ch; int ret; printf("Enter the character:"); scanf("%c", &ch); ret = my_ispunct(ch); /* Based on return value, print whether ch is lower case alphabet or not */ }