CMIS 102 Hands-On Lab
Week 1:
Overview:
This Hands-on lab allows you to experiment with simple sequential print statements using an online C compiler such as ideone.com or codetwist.com
Instructions:
a. Open up any online C compiler (e.g ideone.com, codetwist.com). b. Be sure the C Language is selected. c. Enter the code below into the editor. (Note: LEO doesn’t let you just copy and paste from this document so you can either download the document and then copy and paste or just go to the Code for HelloWorld link for this week and copy and paste from there.) d. Click the submit, or run button. e. Try the additional learning exercises on the next page.
Here is what Hello, World! Looks like using ideone.com after it has successfully run

Hello, World C code #include <stdio.h> int main(void) { printf("Hello, World!"); return 0; }

Learning Exercises for you to try:

1. Remove the semi-colon (;) at the end of this statement:

printf("Hello, World!");

main.c: In function ‘main’: main.c:5:4: error: expected ‘;’ before ‘return’ return 0; ^

2. What happens if you add another printf statement such as:

printf("Goodbye"); after the printf("Hello, World!"); line?

Hello, World!Goodbye

The Lack of a \n which means new line made the two phrases sit side by side with no spaces in-between.

3. Experiment by adding additional printf statements to your code such as: printf("Goodbye \n"); printf("Hello, again! \n");
What does the "\n" do to the output?
The \n signifies a new line, so when I put the code below in, it allowed for spaces to appear after each phrase. Which yielded the results below…
#include <stdio.h> int main(void) { printf("Hello, World! \n"); printf("Goodbye