# C# Adding integers, averages of numbers and the difference of these numbers • ### Question

• My instructor has a program he wanted me to create and I am having difficulties..I am new to this and trying to understand. I am having problems with the sum, average, product and the difference on how to write the code exactly

Enter a number...4
Total numbers inputted so far = 1
Enter another number...50
Total numbers inputted so far =2
Enter another number...51
Total numbers inputted so far =3
Enter final number...3
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Total Numbers Entered is 4
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The Sum of the numbers is...108
The Difference of the Numbers is...-100
The Average of the Numbers is...27
The Product of the numbers is...30600
The result of Special Case 1 is...2562
The result of Special Case 2 is...-54
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Are these numbers less than 50?
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Number 1 = YES
Number 2 =NO
Number 3 = NO
Number 4 =YES
(Here are the calculations of the special case 1 and special case 2....1. Find the products of numbers 2 and 3 and numbers 1 and 4
and add them together in that order.
a. This all needs to be done in the code
2. Find the products of numbers 2 and 4 and numbers 1 and 3
and subtract them in that order.
a. This all needs to be done in the code
If the average has a decimal, it must show the text to display the
remainder. If there is no decimal, then the remainder text does not
need to show.
In my book...in chapter 3 It says..Another C# APP: Adding Integers
Displaying the sum of two numbers input from the keyboard
in the ex , in the console window it writes
int number1; // declare the first number to add
int number2; // declare the second number to add
int sum; declare  the sum of number1 and number2
then..
Console. Write( " Enter first integer: "); // prompt user
Console.Write( "Enter second integer; "); //prompt user
sum = number1 + number2; //add numbers
Console.WriteLine( "Sume is {0}" , sum);  //display the sum
I am really confused exactly how to do the difference and the average...since example of sum in book think i can do that but the difference and average etc...
would it be on one line........ difference = 4-50-51-3;

Console.Write( "The Difference of the numbers is...{0}" , difference);  ????

Thursday, September 5, 2013 3:54 PM

• I am really confused exactly how to do the difference and the average...since example of sum in book think i can do that but the difference and average etc...
would it be on one line........ difference = 4-50-51-3;

Console.Write( "The Difference of the numbers is...{0}" , difference);  ????

Once you know the sum, the average is just the sum / the number of items.

The difference can be done on one line, but you can also split it up:

```int difference = firstItem;
for (int i=1;i<numberOfItems;++i) // Skip first item here
difference = difference - item[i];
```