CSCI 1120 (Low-Level Computing), Spring 2010:
Homework 4

Credit:

10 points.

Reading

Be sure you have read, or at least skimmed, the readings for 3/29, linked from the ``Lecture topics and assignments'' page.

Programming Problems

Do the following programming problems. You will end up with at least one code file per problem. Submit your program source by sending mail to bmassing@cs.trinity.edu, with each file as an attachment. Please use a subject line that mentions the course number and the assignment (e.g., ``csci 1120 homework 4''). You can develop your programs on any system that provides the needed functionality, but I will test them on one of the department's Linux machines, so you should probably make sure they work in that environment before turning them in.

1. (10 points) Write a C program that gets a sequence of integers from the user (ending with anything that's not an integer) and then prints:
   • The smallest number entered.
   • The largest number entered.
   • The average of all the numbers entered (sum of all numbers divided by how many there are).
   Here is a sample execution of the program (user input shown in italics):

   enter some integers, anything non-numeric to end
   20
   40
   -4
   4
   ruru
   
   minimum = -4
   maximum = 40
   average = 15.000000

   Your program should do something reasonable if no numbers are entered (e.g., print ``no numbers entered''). It also should work for any number of inputs (so you probably should not try to use an array to store the input).

   You may (or may not) find it helpful to use constants INT_MIN and INT_MAX (the smallest and largest ints), defined in limits.h.