v0.40: Create exercises. Challenge the community.

seq_scan

Your mission

Write a program that receives two strings and checks, case-insensitively, whether every character of the first string appears in the second string in the same relative order.

See it in action

./seq_scan "run" "RxUxNxtime" | cat -e

Expected result

run$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly two arguments.
If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.
Scan the second string left to right and attempt to match each character of the first string in order, ignoring case differences.
If all characters of the first string are matched in order, print the first string followed by a newline.
Otherwise, print only a newline.

More examples

./seq_scan "Run" "runtimex" | cat -e

Expected result

Run$

./seq_scan "build" "BdIlLd" | cat -e

Expected result

./seq_scan | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

seq_scan.c

Allowed functions

write

seq_scan

Strings: walking and searching

Your mission

Write a program that receives two strings and checks, case-insensitively, whether every character of the first string appears in the second string in the same relative order.

See it in action

./seq_scan "run" "RxUxNxtime" | cat -e

Expected result

run$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly two arguments.
If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.
Scan the second string left to right and attempt to match each character of the first string in order, ignoring case differences.
If all characters of the first string are matched in order, print the first string followed by a newline.
Otherwise, print only a newline.

More examples

./seq_scan "Run" "runtimex" | cat -e

Expected result

Run$

./seq_scan "build" "BdIlLd" | cat -e

Expected result

./seq_scan | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

seq_scan.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

02Match succeeds despite differing caseWaiting

03First string has mixed caseWaiting

04Characters present but not in orderWaiting

05Long case-insensitive matchWaiting

06Short two-char matchWaiting

07All chars interleaved in orderWaiting

08Uppercase first string, lowercase secondWaiting

09Partial match that falls shortWaiting

seq_scan

Your mission

Write a program that receives two strings and checks, case-insensitively, whether every character of the first string appears in the second string in the same relative order.

See it in action

./seq_scan "run" "RxUxNxtime" | cat -e

Expected result

run$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly two arguments.
If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.
Scan the second string left to right and attempt to match each character of the first string in order, ignoring case differences.
If all characters of the first string are matched in order, print the first string followed by a newline.
Otherwise, print only a newline.

More examples

./seq_scan "Run" "runtimex" | cat -e

Expected result

Run$

./seq_scan "build" "BdIlLd" | cat -e

Expected result

./seq_scan | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

seq_scan.c

Allowed functions

write

seq_scan

Strings: walking and searching

Your mission

Write a program that receives two strings and checks, case-insensitively, whether every character of the first string appears in the second string in the same relative order.

See it in action

./seq_scan "run" "RxUxNxtime" | cat -e

Expected result

run$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly two arguments.
If the program does not receive exactly two arguments (argc must be 3), print wrong number of arguments followed by a newline.
Scan the second string left to right and attempt to match each character of the first string in order, ignoring case differences.
If all characters of the first string are matched in order, print the first string followed by a newline.
Otherwise, print only a newline.

More examples

./seq_scan "Run" "runtimex" | cat -e

Expected result

Run$

./seq_scan "build" "BdIlLd" | cat -e

Expected result

./seq_scan | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

seq_scan.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

02Match succeeds despite differing caseWaiting

03First string has mixed caseWaiting

04Characters present but not in orderWaiting

05Long case-insensitive matchWaiting

06Short two-char matchWaiting

07All chars interleaved in orderWaiting

08Uppercase first string, lowercase secondWaiting

09Partial match that falls shortWaiting

v0.40: Create exercises. Challenge the community.

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