putchar

First program8

Objective

Implement a function that writes a single byte to standard output and returns it.

Steps

Write exactly one byte to standard output: the value of c reduced to an unsigned char.
Use the write function on file descriptor 1, do not buffer or batch anything.
Return the byte you wrote, as an int. For a normal character that is the same value you were given.
Do not print a newline or anything else; only the one byte belongs on the output.

examples

$ putchar('z')

$ putchar('\n')

Constraints

Expected files

putchar.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

01Uppercase letter

02Lowercase letter

03Digit character

04Space character

05Newline character

06Null byte is still one byte

putchar

Objective

Implement a function that writes a single byte to standard output and returns it.

Steps

Write exactly one byte to standard output: the value of c reduced to an unsigned char.
Use the write function on file descriptor 1, do not buffer or batch anything.
Return the byte you wrote, as an int. For a normal character that is the same value you were given.
Do not print a newline or anything else; only the one byte belongs on the output.

examples

$ putchar('z')

$ putchar('\n')

Constraints

Expected files

putchar.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.

putchar

First program8

Objective

Implement a function that writes a single byte to standard output and returns it.

Steps

Write exactly one byte to standard output: the value of c reduced to an unsigned char.
Use the write function on file descriptor 1, do not buffer or batch anything.
Return the byte you wrote, as an int. For a normal character that is the same value you were given.
Do not print a newline or anything else; only the one byte belongs on the output.

examples

$ putchar('z')

$ putchar('\n')

Constraints

Expected files

putchar.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

01Uppercase letter

02Lowercase letter

03Digit character

04Space character

05Newline character

06Null byte is still one byte