Use python
def exec_2(f):
f()
f()
any function that is passed into exec_2() will be executed twice without parameters. Your task is to write a function exec_4(f) that takes in a function f as a parameter and executes the function f 4 times using the function exec_2. The function f in this case will draw a cute koala bear, and, in conjunction with, exec_4(), you will draw 4 koalas on the same tree! Suppress the newline in the print statement for the koala, this can be done using print's end argument
def exec_2(f):
f()
f()
def exec_4(f):
# define this function using exec_2
# define a new function here that prints out the koala once
# use your function and exec_4 to draw 4 koala bears!

function exec_4(f) takes in a function f as a parameter and executes the function f 4 times using the function exec_2. At first exec_2(f) call the function f is executed twice and and second exec_2(f) call the function f is again executed twice so the function f executes 4 times in total.

Third method:

def print_koala():

print("koala")

a function that prints out the koala once

This function has a print statement which is passed the string koala to print on output screen.

exec_4(print_koala)

function exec_4 is used to print koala four times. This function exec_4 takes as argument the function print_koala() So this works as follows:

exec_4(print_koala)

The body of exec_4 executes as:

exec_2(print_koala)

Now at first call to exec_2(print_koala) the program moves to the function exec_2 which executes print_koala() method twice. Since print_koala() method has a print statement print("koala") so this is executed twice:

koala koala

Now at second call exec_2(print_koala) the program moves to the function exec_2 which executes print_koala() method twice again. Since print_koala() method has a print statement print("koala") so this is executed again twice:

koala koala

So the output of the entire above program is:

koala koala koala koala

The screenshot of program along with its output is attached.