Valid Mobile Number

Valid Mobile Number

Problem:

The program must accept a list of mobile numbers (in separate lines) as the input. The character q or Q represents the end of the input. The program must print the number of invalid mobile numbers among the given list of mobile numbers as the output. A valid mobile number contains exactly 10 digits.

Input:

9854653221 

997878A1576 

9992224578 

999225789900 

986578989B 

817524990 

Q

Output:

4

Program:

count = 0 

total_count = 0 

while 1: 

    number = input().strip()

    if number == 'q' or number == 'Q':

        break

    digit_count = 0 

    invalid = 0 

    for i in number: 

        if i.isdigit():

            digit_count += 1 

        else: 

            invalid = 1 

            break

    if digit_count == 10 and invalid == 0: 

        count += 1 

    total_count += 1     

print(total_count - count)        

    

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