Write a c$++$ code explaining every line of code please and please make sure the code is basic as the course is a programming $1$ course.

Question points$]$:

Write a complete C$++$ program that declares an array of $100$ characters, and fills it through the user's input string until the user enters the newline $($Enter$)$ character. It then replaces all occurrences characters $\text{'}$A$\text{'}$ in the string with the characters $\text{'}$$$\text{'},$ and counts how many times such replacement was done. It then prints the final updated string and replacement count. It is assumed that the user input will be less than $99$ characters.

#include $($iostream$)$

using namespace std;

void main$()$

$\{\frac{\frac{?}{?}}{\frac{?}{?}}$ Your code here..