C++ problem

In this problem, you should ask the user for a number between 1 and 999, 999, 999 (commas included) and output the same number back, but with commas removed.

MUST to Input the number as a string. AND Use if statements to separate the cases where the input is less than 1,000, between 1,000 and 999,999, etc.

CANNOT use char arr, strcpy

Example output

Please enter an integer between 1 and 999,999,999.

314,697

Your number with comma(s) removed: 314697

Largest digit: 9 Smallest digit: 1

NOW I have fined the code like this and I iss the Largest digit and Smallest digit part