CSCI102A  Lab 3B Fall 2008 Semester
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Write a program to read a list of non-negative integers, 
and to display the largest integer, the smallest integer,
and the average of all the integers.

The user indicates the end of the list by entering a negative
sentinel value that is NOT used in the calculations.

The average should be a value of type double,
so that it includes a fractional part.

The program should repeat at the user's request.



EXAMPLE PROGRAM RUNS:


Example 1
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Please enter a list of whole numbers.
Press the enter key after entering each number.
Signal the end of the list by entering a negative number:


37
10
41
33
25
-1

You entered 5 numbers.
The largest number is: 41
The smallest number is: 10
The average of the numbers is: 29.2

Do you want to run this program again? (y/n) Y



Please enter a list of whole numbers.
Press the enter key after entering each number.
Signal the end of the list by entering a negative number:


17
19
49
2
66
6
-1

You entered 6 numbers.
The largest number is: 66
The smallest number is: 2
The average of the numbers is: 26.5

Do you want to run this program again? (y/n) n

Thank you for using this program. Goodbye!




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Test your program by entering the example numbers shown above.

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