I am taking my first programming course. I am frustrated with my current assignment which is to creat a program that adds three numbers and finds their average. My problem is how to define "sum" and "average." This is, in part, my program:

int first_number

int second_number

int third_number

printf("Enter first_number;second_number, and third_number: ");

scanf("%d%d%d", &first_number, second_number, and third_number);

When I get to this part how do I "define" sum and average?

Thanks for your help. P.S. I am using the Borland Command Prompt programming software.

Mart00