write a c$++$ code Class activity $7.$A

Learning outcome: test students' ability to create a counting loop using while loop.

Activity description: counting from a given number

$$ Use a while or do$-$while loop to display a range of number.

$$ The initial number is collected from the keyboard and print numbers from the initial number down to $10,$ in a step of $1.$

$$ The initial number must be between $15$ and $20,$ inclusive.

$$ Use while or do$-$while loop to make sure that the initial is between $15$ and $20.$

$$ If the initial number is not between $15$ and $20,$ the program will ask the user to enter a valid number.

$$ The program will print when the initial number is between $15$ and $20.$

Class activity $7.$B

Learning outcome: test students' ability to create an application using counting loop with break and$/$or continue statement.

Activity description: average grade checker

Create a C$++$ program that will ask the user to enter grades and stop when the average of all grades is greater than or equal to $80.$ The program should that the following requirements:

grades, which are entered by the user, have to be between $1$ and $100,$ otherwise, the program will ask the user to enter another grade.

the average of the entered grades is calculated as:

average $=$ sum of all grades $/$ number of grades

when the average reaches more than $80,$ the program will stop and display the total average:

The average for $\_\_\_\_$ number of grades is $\_\_\_\_\_\_\_$