CSCI 261 - Programming Concepts (C++)Fall 2017 - Lab 1AQuick Links: Canvas | CS @ Mines | Cloud9 | Piazza | zyBooks |
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This lab is due by Tuesday, August 29, 2017 11:59 PM .
The IDEThis lab teaches you how to create a
C++ Cloud9 program from scratch. Cloud9 is an Integrated Development
Environment (IDE) designated to facilitate the development of software
solutions. Cloud9 includes an editor, a compiler, a linker, a debugger,
and many other additional tools to help programmers write high quality
software.
Depending on its complexity, a software project will have many
different files associated with it, such as the source code
(instructions written using a programming language), header files
(mostly definitions), resource files (images, sounds), data files, and
configuration files. Most IDEs, including Cloud9, require programmers
to organize all of these files into an entity called a project.
More complex software may be built from many inter-related projects
that are organized into a solution (a container for
projects). But, in our course this semester, we will only develop single-project
solutions.
Creating a C++ Empty ProjectBefore you begin, delete the files
that Cloud9 gives you by default. You can highlight the four files,
right click, and select "Delete" from the pop-up menu.
Now you may proceed to create your first C++ Cloud9 project. How
exciting! On the left hand window, right click on the name of your
workspace that you created in Lab0. Select
"New Folder" and name it "A1" (we'll find out why in Lab1B). Now
add another new folder to A1 and call it "Lab1A". Wonderful! Read
the next paragraph about file naming before moving on.
Let us now provide you with a few
important notes about names for projects, solutions, and development
files in general. Avoid using spaces or any special characters when
naming your project. We highly recommend using short names (less than
10 characters). If you want to use more than one word, use underscores
to connect the words or appropriate use of upper/lower case (e.g.,
MyGame). Also, make sure your chosen name has a meaning so you can
remember what the project is later (e.g., Lab1A).
Adding a New C++ Source Code FileYour task is to create a source file
named ''main.cpp''. Right click the Lab1A folder and choose "New File"
from the pop-up menu. The same rules we discussed for a project's name
apply for a source code's name as well. In most cases, we will name the
first source code file of a project simply ''main.cpp''.
Writing your CodeAfter you have successfully added a
new source code file, double click the file to open it with a text
editor. You can now start typing code. Sweet! Since this is a
programming class, not a typing class, enter the code between the
following lines with cut/paste:
/* CSCI 261 Lab 1A: XXXX (_GIVE_BRIEF_DESCRIPTION_HERE_)
*
* Author: XXXX (_INSERT_YOUR_NAME_HERE_)
*
* More complete description here...
*/
// The include section adds extra definitions from the C++ standard library.
#include <iostream> // For cin, cout, etc.
// We will (most of the time) use the standard library namespace in our programs.
using namespace std;
// Define any constants or global variables below this comment.
// Must have a function named "main", which is the starting point of a C++ program.
int main() {
/******** INSERT YOUR CODE BELOW HERE ********/
cout << "Hello world!" << endl; // print Hello world! to the screen
/******** INSERT YOUR CODE ABOVE HERE ********/
return 0; // signals the operating system that our program ended OK.
}
Next, edit all places where XXXX
appears in your main.cpp file with the appropriate information. When
you are done, you can save main.cpp by typing Ctrl+s. Note the asterisk
next to the filename in the tab (which means unsaved lines) disappears
once the save completes.
Running your CodeThe easiest way to compile and execute
your project is to click the "Run" button at the top menu bar. A new
tab should appear below with the following output:
Running /home/ubuntu/workspace/A1/Lab1A/main.cpp Hello world! Congratulations! You've written and
run your very first program! The first line is Cloud9 telling you what
program it is running. The second line is the actual output from your
program. How cool!
The Iterative ProcessNow that your program is running, we
are going to add two more output statements following the "Hello
world!" line. Add a second cout statement that prints
How are you?
Run your program again to verify you
are seeing the new output on the screen. Finally, add a third line to
print (note the spaces)
(I'm fine).
Run your program again. When you are
complete, your program should output
Hello world!
How are you? (I'm fine). You just went through a short
iterative process, or as programmer's say an incremental build. Once
you knew you had your program running properly, you made a small change
to the program and reran the program to verify the change was correct.
Once again, a small change was introduced to the code and the program
was run to verify the proper output. You should become very familiar
with this process as it will make future projects go smoother if you
make small changes at a time.
This lab taught you how to create a C++ Cloud9 project from scratch and
output statements to the screen. You need to know how to create an
empty project from scratch. Thus, feel free to create a second new
empty project for grins (i.e., do this lab a second time when you start
Lab1B).
Lab Submission
You will submit your solution to this lab with your first official
homework assignment (Assignment 1).
Detailed instructions for doing this are posted in Assignment 1.
Optional Material: Details on the Cloud9 InterfaceThe default interface can be described
in five sections: the menus, left pane, Code Window, Output Window, and
right pane.
The menus have the same functionality
of most Microsoft Windows programs (e.g., Open File); there are,
however, menu items that are specific to programming.
The left pane has several different
views. You will almost always use the Workspace tab which is similar to
Windows Explorer. All of the code files associated with your projects
(i.e., program) will appear here.
The Code Window is where you will
type/edit your C++ programs. It works similar to a text editor with the
bonus of syntax coloring and segment grouping. You can have multiple
code windows open - they will stack as tabs at the top of the Code
Window. These tabs allow you to easily jump between multiple files when
editing. You can drag a tab to open to windows side by side for easy
viewing.
The Output Window keeps track of
information from the compiler. When you build your program (or code),
this window will list any problems that it found and give you tools to
help you find and fix those problems. If there were no errors building
your program, then the output from your program will appear in this
window.
The right pane also has several
different views. The Collaborate tab may be most helpful in class to
use to chat during live coding examples. As our programs become more
complex, the Outline tab will allow you to quickly jump around your
code. We will discuss the Debugger later as a helpful tool to find and
correct errors in our programs.
This lab is due by Tuesday, August 29, 2017 11:59 PM . | |
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Last Updated: 08/12/17 09:14
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