Compute the average of a list of user-entered integers representing rolls of two dice. The list ends when 0 is entered. Integers must be in the range 2 to 12 (inclusive); integers outside the range don't contribute to the average. Output the average, and the number of valid and invalid integers (excluding the ending 0). If only 0 is entered, output 0. The output may be a floating-point value. Ex: If the user enters 8 12 13 0, the output is:Average: 10Valid: 2Invalid: 1Hints:

Following are the program to the given scenario:

Program Explanation:

Defining header file.Defining the main method.Inside the main method, four integer variables "userInt, sum, valid, and invalid" are declared, in which "sum, valid, and invalid" is defined that Initialize the value with 0.In the next step, "userInt" is declared that inputs the value and defined the do-while loop.Inside the loop, the conditional statement is defined that checks valid, invalid, and sum value, and defined print method that calculates average and also prints "Valid and Invalid" number.  

Program:

#include <iostream>//header file

using namespace std;

int main()// defining the main method

{

   int userInt,sum,valid,invalid;//defining integer variable  

   sum=valid=invalid=0;//Initializing value in integer variables

   cin>>userInt;//input value in userInt

   //defining do-while loop

   do

   {

      if(userInt>=2&&userInt<=12)//defining if block that check value in range that is 2 to 12

      {

          sum = sum+ userInt;//adding input value into sum variable

          valid++;//incrementing valid value

      }

      else//defining else block

      {

      invalid++;//incrementing invalid value

      }

      cin>>userInt;//input values

  }while(userInt != 0);//defining a while loop that check input value not equal to 0

   if(valid != 0)//defining if block that check valid not equal 0

  {

       cout<<"Average: "<<(sum)/valid<<endl;//using print method that calculates and prints average value

       cout<<"Valid: "<<valid<<endl;//using print method that prints valid value

       cout<<"Invalid: "<<invalid<<endl;//using print method that prints Invalid value

  }

  return 0;

}

Output:

Please find the attached file.

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mylist = []

total = 0

valid = 0

invalid = 0

num = int(input("Number: "))

while num != 0:

    mylist.append(num)

    if(num>=2 and num<=12):

         total = total + num

         valid = valid + 1

    else:

         invalid = invalid + 1

    num = int(input("Number: "))

   

print("Average: "+str(total/valid))

print("Valid: "+str(valid))

print("Invalid: "+str(invalid))

   

Explanation:

The solution is implemented in Python

This line defines an empty list

mylist = []

The next three lines initializes total, valid input and input to 0 respectively

total = 0

valid = 0

invalid = 0

This line prompts user for input

num = int(input("Number: "))

This loop is repeated while input number is not 0

while num != 0:

This adds input number to the list

    mylist.append(num)

This checks for valid inputs

    if(num>=2 and num<=12):

If valid, the sum is calculated

         total = total + num

And the number of valid inputs is incremented by 1

         valid = valid + 1

If otherwise,

    else:

The number of invalid inputs is incremented by 1

         invalid = invalid + 1

This prompts user for another input

    num = int(input("Number: "))

   

This calculates and prints the average

print("Average: "+str(total/valid))

This prints the number of valid inputs

print("Valid: "+str(valid))

This prints the number of invalid inputs

print("Invalid: "+str(invalid))

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