strlen

Strings: walking and searching16

Objective

Implement a function that counts characters in a string up to but not including the null terminator.

Steps

Walk through the input character by character until you reach \0.
Return the total number of characters seen before that terminator.
Do not modify or write to the input buffer.

examples

$ strlen("")

$ strlen("docker said not today")

Constraints

Expected files

strlen.c

Allowed functions

None. Write every helper yourself.

Allowed headers

<stddef.h>defines size_t

libc

Standard C library

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

Tests

Run the tests to grade your code

Build

01Empty string

02Short word

03String with spaces

04Single character

05Longer string

06Two words

strlen

Objective

Implement a function that counts characters in a string up to but not including the null terminator.

Steps

Walk through the input character by character until you reach \0.
Return the total number of characters seen before that terminator.
Do not modify or write to the input buffer.

examples

$ strlen("")

$ strlen("docker said not today")

Constraints

Expected files

strlen.c

Allowed functions

None. Write every helper yourself.

Allowed headers

<stddef.h>defines size_t

libc

Standard C library

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

strlen

Strings: walking and searching16

Objective

Implement a function that counts characters in a string up to but not including the null terminator.

Steps

Walk through the input character by character until you reach \0.
Return the total number of characters seen before that terminator.
Do not modify or write to the input buffer.

examples

$ strlen("")

$ strlen("docker said not today")

Constraints

Expected files

strlen.c

Allowed functions

None. Write every helper yourself.

Allowed headers

<stddef.h>defines size_t

libc

Standard C library

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

Tests

Run the tests to grade your code

Build

01Empty string

02Short word

03String with spaces

04Single character

05Longer string

06Two words