CMSC104 Summer 2012

Classwork 5: Functions

Tuesday, July 17, 2012

Complete the following:

Ensure the machine is booted into Linux
Login to Linux
Open a termimal from the top left Applications menu -> System Tools -> Terminal
Create a directory called cw05 to store this classwork
Go into your new cw05 directory
Create a new file using the editor you like (nano, vi, emacs, xemacs) called cw05.c

Type a comment for the header based on the template below:

/*   File: cw05.c
     Name: A. Student
     Username: astudent1
     Date: 10/24/07
     Description: ...
*/

Add the #includes to allow us to use scanf and printf
Create a function called "read_value" that when called will:
1. print out a string asking for the user to input one integer
2. use scanf to read the value
3. then return that value to the caller
Create a function called "average" that when called will:
1. add together 4 integer values
2. return the average of the 4 values as a double.
Create a main() that will:
1. call read_value 4 times to get user input
2. call average with the 4 values returned from each call to read_value
3. print out the result returned from the call to average
Note that the user input must occur in "read_value" and the printout must occur in "main" for full credit
Once you are sure the program is done and working well, start a script using script
Once the script is running, show you compiling your program, and then running the program three times, typing in different values each time.
Exit from the script, which will save the log typescript
Once you are done, use submit to submit two files, cw05.c and typescript
```
linux3[26]% submit cs104 cw05 cw05.c typescript
```
After submitting your files, you can verify your files were submitted by using the submitls command as shown below
```
linux3[26]% submitls cs104 cw05
```
MAKE SURE YOU LOGOUT AFTER SUBMITTING THE ASSIGNMENT AND BEFORE LEAVING CLASS!