puts

Your mission

Implement gm_puts, your own puts, which writes a string to standard output, adds a trailing newline, and returns a non-negative value on success.

See it in action

gm_puts("git status")

Expected result

git status

Your checklist

For your own tracking. Tests grade your code.

Write every byte of the string, in order, to standard output using the write function on file descriptor 1.
After the string, write exactly one newline. This trailing \n is part of the job, an empty string still produces a single newline.
Return any non-negative value on success. Only the sign of the return is portable, so don't worry about the exact number, just keep it >= 0 when everything was written.
Use only write; do not call printf or any other output function, and do not buffer the bytes.

More examples

gm_puts("")

Expected result

Whitespace only: "\n"

Constraints

Expected files

puts.c

Allowed functions

write

Allowed headers

<unistd.h>declares write

libc

Standard C library

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

puts

First program

Your mission

Implement gm_puts, your own puts, which writes a string to standard output, adds a trailing newline, and returns a non-negative value on success.

See it in action

gm_puts("git status")

Expected result

git status

Your checklist

For your own tracking. Tests grade your code.

Write every byte of the string, in order, to standard output using the write function on file descriptor 1.
After the string, write exactly one newline. This trailing \n is part of the job, an empty string still produces a single newline.
Return any non-negative value on success. Only the sign of the return is portable, so don't worry about the exact number, just keep it >= 0 when everything was written.
Use only write; do not call printf or any other output function, and do not buffer the bytes.

More examples

gm_puts("")

Expected result

Whitespace only: "\n"

Constraints

Expected files

puts.c

Allowed functions

write

Allowed headers

<unistd.h>declares write

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

01Typical stringWaiting

02Empty string: just a newlineWaiting

03String with spacesWaiting

04Single characterWaiting

05Longer command stringWaiting

06Only spacesWaiting

07Sentence with pathWaiting

puts

Your mission

Implement gm_puts, your own puts, which writes a string to standard output, adds a trailing newline, and returns a non-negative value on success.

See it in action

gm_puts("git status")

Expected result

git status

Your checklist

For your own tracking. Tests grade your code.

Write every byte of the string, in order, to standard output using the write function on file descriptor 1.
After the string, write exactly one newline. This trailing \n is part of the job, an empty string still produces a single newline.
Return any non-negative value on success. Only the sign of the return is portable, so don't worry about the exact number, just keep it >= 0 when everything was written.
Use only write; do not call printf or any other output function, and do not buffer the bytes.

More examples

gm_puts("")

Expected result

Whitespace only: "\n"

Constraints

Expected files

puts.c

Allowed functions

write

Allowed headers

<unistd.h>declares write

libc

Standard C library

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

puts

First program

Your mission

Implement gm_puts, your own puts, which writes a string to standard output, adds a trailing newline, and returns a non-negative value on success.

See it in action

gm_puts("git status")

Expected result

git status

Your checklist

For your own tracking. Tests grade your code.

Write every byte of the string, in order, to standard output using the write function on file descriptor 1.
After the string, write exactly one newline. This trailing \n is part of the job, an empty string still produces a single newline.
Return any non-negative value on success. Only the sign of the return is portable, so don't worry about the exact number, just keep it >= 0 when everything was written.
Use only write; do not call printf or any other output function, and do not buffer the bytes.

More examples

gm_puts("")

Expected result

Whitespace only: "\n"

Constraints

Expected files

puts.c

Allowed functions

write

Allowed headers

<unistd.h>declares write

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

01Typical stringWaiting

02Empty string: just a newlineWaiting

03String with spacesWaiting

04Single characterWaiting

05Longer command stringWaiting

06Only spacesWaiting

07Sentence with pathWaiting