isspace

Your mission

Implement gm_isspace, your own isspace, which reports whether a character is a whitespace character.

See it in action

gm_isspace(' ')

Expected result

Your checklist

For your own tracking. Tests grade your code.

Return a non-zero value when c is one of the six standard whitespace characters, and 0 otherwise.
The whitespace set is: space ' ', horizontal tab \t, newline \n, vertical tab \v, form feed \f, and carriage return \r.
Vertical tab \v and form feed \f are the two that are easy to forget, they count just like the others.
Anything else, including letters and digits, is not whitespace.

More examples

gm_isspace('\v')

Expected result

gm_isspace('a')

Expected result

Constraints

Expected files

isspace.c

Allowed functions

None. Write every helper yourself.

libc

Standard C library

Implements the contract of a function from the standard C library.

isspace

Characters and ASCII

Your mission

Implement gm_isspace, your own isspace, which reports whether a character is a whitespace character.

See it in action

gm_isspace(' ')

Expected result

Your checklist

For your own tracking. Tests grade your code.

Return a non-zero value when c is one of the six standard whitespace characters, and 0 otherwise.
The whitespace set is: space ' ', horizontal tab \t, newline \n, vertical tab \v, form feed \f, and carriage return \r.
Vertical tab \v and form feed \f are the two that are easy to forget, they count just like the others.
Anything else, including letters and digits, is not whitespace.

More examples

gm_isspace('\v')

Expected result

gm_isspace('a')

Expected result

Constraints

Expected files

isspace.c

Allowed functions

None. Write every helper yourself.

libc

Standard C library

Implements the contract of a function from the standard C library.

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01SpaceWaiting

02Horizontal tabWaiting

03NewlineWaiting

04Vertical tabWaiting

05Form feedWaiting

06Carriage returnWaiting

07Letter is not whitespaceWaiting

08Digit is not whitespaceWaiting

isspace

Your mission

Implement gm_isspace, your own isspace, which reports whether a character is a whitespace character.

See it in action

gm_isspace(' ')

Expected result

Your checklist

For your own tracking. Tests grade your code.

Return a non-zero value when c is one of the six standard whitespace characters, and 0 otherwise.
The whitespace set is: space ' ', horizontal tab \t, newline \n, vertical tab \v, form feed \f, and carriage return \r.
Vertical tab \v and form feed \f are the two that are easy to forget, they count just like the others.
Anything else, including letters and digits, is not whitespace.

More examples

gm_isspace('\v')

Expected result

gm_isspace('a')

Expected result

Constraints

Expected files

isspace.c

Allowed functions

None. Write every helper yourself.

libc

Standard C library

Implements the contract of a function from the standard C library.

isspace

Characters and ASCII

Your mission

Implement gm_isspace, your own isspace, which reports whether a character is a whitespace character.

See it in action

gm_isspace(' ')

Expected result

Your checklist

For your own tracking. Tests grade your code.

Return a non-zero value when c is one of the six standard whitespace characters, and 0 otherwise.
The whitespace set is: space ' ', horizontal tab \t, newline \n, vertical tab \v, form feed \f, and carriage return \r.
Vertical tab \v and form feed \f are the two that are easy to forget, they count just like the others.
Anything else, including letters and digits, is not whitespace.

More examples

gm_isspace('\v')

Expected result

gm_isspace('a')

Expected result

Constraints

Expected files

isspace.c

Allowed functions

None. Write every helper yourself.

libc

Standard C library

Implements the contract of a function from the standard C library.

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01SpaceWaiting

02Horizontal tabWaiting

03NewlineWaiting

04Vertical tabWaiting

05Form feedWaiting

06Carriage returnWaiting

07Letter is not whitespaceWaiting

08Digit is not whitespaceWaiting