Using the isxdigit() function in C The isxdigit() function in C is used to check whether a character is a hexadecimal digit (0-9,a-f,A-F). The function takes a character as input and returns a non-zero value if the character is a hexadecimal digit, o...
Using the isspace() function in C The isspace() function in C is used to check whether a character is a space. The function takes a character as input and returns a non-zero value if the character is a space, or zero if the character is not a space. ...
Using the tolower() function in C The tolower() function in C is used to convert an uppercase character to its lowercase counterpart. For example, the tolower() the function would convert the character 'A' to 'a'. The tolower() function takes a chara...
Using the isaplha() function in C The isalpha() function in C is used to check whether a character is alphabetic. The function takes a character as input and returns a non-zero value if the character is alphabetic, or zero if the character is not alp...
Using the isalnum() function in C The isalnum() function in C is used to check whether a character is alphanumeric. The function takes a character as input and returns a non-zero value if the character is alphanumeric, or zero if the character is not...
Using the islower() function in C The islower() function in C is used to check whether a character is lowercase. The function takes a character as input and returns a non-zero value if the character is lowercase, or zero if the character is not lower...
