Assignment: Binary to decimal conversion

Write a program in $C++$ that asks the user $5$ binary digits. The digits will represent a binary number. Convert the binary number into decimal using the following formula: digit $5+$ digit $42+$ digit $34+$ digit $28+$ digit $116$

Example output is shown below $($user input is in bold$).$ You should not be using any loops or functions. You are also required to provide inline comments in your code.

Enter the $1$st binary digit: $1$

Enter the $2$nd binary digit: $0$

Enter the $3$rd binary digit: $1$

Enter the $4$ th binary digit: $1$

Enter the $5$ th binary digit: $0$

$10110$ converted to decimal is $22$