Write a function in Python to count and display the number of lines starting with alphabet 'A' present in a text file "LINES.TXT", e.g., the file "LINES.TXT" contains the following lines:

A boy is playing there. 
There is a playground.
An aeroplane is in the sky.
A cricket match is being played.

The function should display the output as 3.

The file "LINES.TXT" contains the following lines:

A boy is playing there.
There is a playground.
An aeroplane is in the sky.
A cricket match is being played.

def count_lines(file_name):
    count = 0
    with open(file_name, 'r') as file:
        for line in file:
            if line.strip().startswith('A'):
                count += 1
    print(count)

count_lines("LINES.TXT")

Output

3