lead_token

Your mission

Write a program that receives a single string argument and prints its first whitespace-delimited token, followed by a newline.

See it in action

./lead_token "ship it before standup" | cat -e

Expected result

ship$

Your checklist

For your own tracking. Tests grade your code.

The program must accept exactly one argument (argc must be 2). Any other argument count produces wrong number of arguments followed by a newline.
A token is a maximal sequence of non-whitespace characters. Spaces and tabs are both valid delimiters.
Skip any leading whitespace before the first token.
If the argument contains no token at all, print only a newline.

More examples

./lead_token "   typescript ate my tabs" | cat -e

Expected result

typescript$

./lead_token "   " | cat -e

Expected result

./lead_token "no-space" | cat -e

Expected result

no-space$

Constraints

Expected files

lead_token.c

Allowed functions

write

lead_token

Words and tokens

Your mission

Write a program that receives a single string argument and prints its first whitespace-delimited token, followed by a newline.

See it in action

./lead_token "ship it before standup" | cat -e

Expected result

ship$

Your checklist

For your own tracking. Tests grade your code.

The program must accept exactly one argument (argc must be 2). Any other argument count produces wrong number of arguments followed by a newline.
A token is a maximal sequence of non-whitespace characters. Spaces and tabs are both valid delimiters.
Skip any leading whitespace before the first token.
If the argument contains no token at all, print only a newline.

More examples

./lead_token "   typescript ate my tabs" | cat -e

Expected result

typescript$

./lead_token "   " | cat -e

Expected result

./lead_token "no-space" | cat -e

Expected result

no-space$

Constraints

Expected files

lead_token.c

Allowed functions

write

Tests

Run the tests to grade your code

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

Build

01No argumentsWaiting

02First token from multi-word stringWaiting

03Leading whitespace before tokenWaiting

04Leading tabs before tokenWaiting

05Only whitespace, no tokenWaiting

06Single token, no delimiterWaiting

07Two arguments: wrong argument countWaiting

lead_token

Your mission

Write a program that receives a single string argument and prints its first whitespace-delimited token, followed by a newline.

See it in action

./lead_token "ship it before standup" | cat -e

Expected result

ship$

Your checklist

For your own tracking. Tests grade your code.

The program must accept exactly one argument (argc must be 2). Any other argument count produces wrong number of arguments followed by a newline.
A token is a maximal sequence of non-whitespace characters. Spaces and tabs are both valid delimiters.
Skip any leading whitespace before the first token.
If the argument contains no token at all, print only a newline.

More examples

./lead_token "   typescript ate my tabs" | cat -e

Expected result

typescript$

./lead_token "   " | cat -e

Expected result

./lead_token "no-space" | cat -e

Expected result

no-space$

Constraints

Expected files

lead_token.c

Allowed functions

write

lead_token

Words and tokens

Your mission

Write a program that receives a single string argument and prints its first whitespace-delimited token, followed by a newline.

See it in action

./lead_token "ship it before standup" | cat -e

Expected result

ship$

Your checklist

For your own tracking. Tests grade your code.

The program must accept exactly one argument (argc must be 2). Any other argument count produces wrong number of arguments followed by a newline.
A token is a maximal sequence of non-whitespace characters. Spaces and tabs are both valid delimiters.
Skip any leading whitespace before the first token.
If the argument contains no token at all, print only a newline.

More examples

./lead_token "   typescript ate my tabs" | cat -e

Expected result

typescript$

./lead_token "   " | cat -e

Expected result

./lead_token "no-space" | cat -e

Expected result

no-space$

Constraints

Expected files

lead_token.c

Allowed functions

write

Tests

Run the tests to grade your code

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

Build

01No argumentsWaiting

02First token from multi-word stringWaiting

03Leading whitespace before tokenWaiting

04Leading tabs before tokenWaiting

05Only whitespace, no tokenWaiting

06Single token, no delimiterWaiting

07Two arguments: wrong argument countWaiting