Lab Quiz 1

Pledged lab quiz

• The only "good programming practice" that is required for this lab is to include your name and e-mail ID in the header comments. You are welcome to include more, but make sure you get the programs working first, as the quiz is timed.
   
• The activities of this week are not to be discussed outside of lab. The quiz is open book but nothing else. You are to produce two programs. Templates for them are available:
   
  • Print.java (right click on the link, and select "save as" (or "save target as" or "save link as"), then save the file onto your home directory)
  • MXPLUSB.java (right click on the link, and select "save as" (or "save target as" or "save link as"), then save the file onto your home directory)
     
• Complete and submit program Print.java (right click on the link, and select "save as" (or "save target as" or "save link as"), then save the file onto your home directory) that prompts from its user for a word. The program then displays the first and last character of the word. A sample run with the user entry underlined could be
   
  Enter a word: subbookkeeper
  The first letter of your word is s
  The last letter of your word is r
   
• Complete and submit program MXPLUSB.java (right click on the link, and select "save as" (or "save target as" or "save link as"), then save the file onto your home directory) that first prompts its user for three floating-point values: a slope, a y-intercept, and  an x-coordinate values. The program then uses those three values to compute the quantity mx + b, where m is the slope value, b is the y-intercept value, and x is the x-coordinate value. This program MAY NOT USE the Line class of programming assignments J2 and J3. A sample run with the user entries underlined could be:
   
  Enter slope: 3.5
  Enter y-intercept: 4.5
  Enter x-coordinate: 2.0
  
  The corresponding y-value is 11.5

Advice

• Remember neither the lab assistants nor other students may help you design, write, or debug the programs. If you are having a problem getting JCreator to work right (which does NOT mean a compilation error), or an error with the submissions, then you may ask a TA.
   
• To maximize your points, make sure your programs compile successfully.
   
• If towards the end things are not going as well as you would want (i.e., the program does not compile), it might be best to try commenting out errant statements (i.e., put a // in front of them)