tab_expand

Words and tokens16

Objective

Write a program that prints its single argument with each space expanded to the next 8-column tab stop.

Steps

The program receives exactly one argument; if not, print wrong number of arguments followed by a newline.
Iterate through the argument character by character, tracking the current output column starting at 0.
When you encounter a space, output (8 - col % 8) spaces and advance the column accordingly.
When you encounter any other character, output it as-is and advance the column by 1.
End the output with a newline.
Use only write.

examples

$ ./tab_expand "a b" | cat -e

a b$

$ ./tab_expand "cursor found another shortcut" | cat -e

cursor found another shortcut$

$ ./tab_expand | cat -e

wrong number of arguments$

Constraints

Expected files

tab_expand.c

Allowed functions

write

Tests

Run the tests to grade your code

Build

01No arguments

02Space at column 1 expands to 7

03Mixed tab-stop distances

04Two expansions at different columns

05Space at column 8 fills a full stop

06No spaces in input

07Too many arguments

tab_expand

Objective

Write a program that prints its single argument with each space expanded to the next 8-column tab stop.

Steps

The program receives exactly one argument; if not, print wrong number of arguments followed by a newline.
Iterate through the argument character by character, tracking the current output column starting at 0.
When you encounter a space, output (8 - col % 8) spaces and advance the column accordingly.
When you encounter any other character, output it as-is and advance the column by 1.
End the output with a newline.
Use only write.

examples

$ ./tab_expand "a b" | cat -e

a b$

$ ./tab_expand "cursor found another shortcut" | cat -e

cursor found another shortcut$

$ ./tab_expand | cat -e

wrong number of arguments$

Constraints

Expected files

tab_expand.c

Allowed functions

write

tab_expand

Words and tokens16

Objective

Write a program that prints its single argument with each space expanded to the next 8-column tab stop.

Steps

The program receives exactly one argument; if not, print wrong number of arguments followed by a newline.
Iterate through the argument character by character, tracking the current output column starting at 0.
When you encounter a space, output (8 - col % 8) spaces and advance the column accordingly.
When you encounter any other character, output it as-is and advance the column by 1.
End the output with a newline.
Use only write.

examples

$ ./tab_expand "a b" | cat -e

a b$

$ ./tab_expand "cursor found another shortcut" | cat -e

cursor found another shortcut$

$ ./tab_expand | cat -e

wrong number of arguments$

Constraints

Expected files

tab_expand.c

Allowed functions

write

Tests

Run the tests to grade your code

Build

01No arguments

02Space at column 1 expands to 7

03Mixed tab-stop distances

04Two expansions at different columns

05Space at column 8 fills a full stop

06No spaces in input

07Too many arguments