how to get started

The biggest problem students have in 126 is getting started on programming assignments. Here are some recommendations. If you are a beginning programmer, it's probably a good idea for you to stop by my office to discuss the problem of 'getting started' so that you're more comfortable with the assignments.

• Get the checklist for the assignment (found on the course web page)
  
• Read both the checklist and the instructions in the course packet before Friday precept, which is when I'll usually introduce and explain the upcoming programming assignment.
  
• Write code on paper. It's a good idea to write pseudocode first so that you have a 'rough draft' of your program before you start typing anything. See writing programs for more detailed information.
  
• Step 0 of the checklist usually has important preparation steps. Don't forget to do this.
  
• Break the assignment into very small steps, much smaller than any 'parts' indicated in the assignment. Carefully test and debug each small step before going on to the next. For example, in the first programming assignment, try to write a small piece of code that reads in a number and prints that number of asterisks. When you get that to work, then try to write plot.c, a program which reads in a series of numbers and prints a corresponding number of asterisks for each one.
  
• Write printf statements throughout your code that print the values of critical variables. For example, you might want to print the value of a variable that changes each time through a loop to make sure the loop's doing what you want it to.
  
• Invent test data that will help you find special cases.
  
• Name your variables well: the names should describe the purpose of the variable. If a variable is being used to count something, call it 'count.' If it holds the result of a series of additions, call it 'sum'.
  
• Most importantly, if you feel lost at the beginning of the assignment, get help from me. When I explain the programs in precept, it's usually very rushed. If you can, arrange to sit down with me so that we can go through the steps in great detail. At the very least, send me email with any questions you have.