Trying to do this in C++

Question 6: Write a program that reads in a line of text and outputs the line with all the digits in all integer numbers replaced with 'x' Please enter a line of text My userlD is john17 and my 4 digit pin is 1234 which is secret My userlD is john17 and my x digit pin is xxxx which is secret Notes: 1. If a digits is part of a word, then the digit is not changed to an 'x'. For example, john17 is NOT changed to johnxx. You may assume that the text entered by the user will contain only letters (upper case or lower case), digits and spaces. Think how to break down your implementation to functions. 2. 3