CMSC216 Spring 2014 (Midterm II Information)

General Information

• Date: Thursday, Apr 24
• Time/Location: Your exam will take place in lecture.
• Duration: 75 minutes
• Closed-book, Closed-notebooks, No Computers/Calculators.
• Use a pencil/mechanical pencil (no pen) to answer the exam.
• Please take a look at the general exam rules available at Exam Rules.

Exam Structure

• Short answer questions: This includes for example, multiple choice, True/False and fill-in-the-blank type questions.
• Code analysis questions: We will give a short segment of code and you may be asked to identify syntax and logical errors, generate code output, etc.
• Code Writing: Write a program/code snippets to solve a given problem. You should be prepared to give a complete program, but we may also ask you to provide just a single function or a code fragment.

Topics

The exam will include all the material covered in discussion session (lab), lecture, quizzes, and projects including the following topics:

• Unix - You must be familiar with the following commands
  • cp
  • ls
  • cd
  • pwd
  • gcc
• C Language
  • Preprocessor directives (e.g., #include, #define, #ifdef)
  • Expressions
  • Bitwise Operators
  • Conditional statements
  • Loops
  • Arrays
  • Strings - You are responsible for the following string functions
    • strlen
    • strcpy
    • strcmp
  • Pointers
  • enum
  • Structures
  • Unions
  • Reading/writing data from/to files (Standard I/O NOT Unix I/O) based on fopen(), fgets, fscanf, fputs, fprintf, etc.
  • Functions
  • stdin, stderr, stdout
  • Linkage
  • Command line arguments
  • exit
  • perror
  • Dynamic Memory Allocation (malloc, realloc, free, etc.)
• Linked Lists(both singly and doubly linked-lists)
• Hashing (as it relates to our projects)
• Makefiles - You need to know how to define makefiles without using implicit rules.
• Big Endian vs. Little Endian
• Assembly
  • irmovl, rrmovl, mrmovl, rmmovl
  • addl, subl, multl, divl, modl
  • jmp, jle, jl, je, jne, jge, jg
  • pushl, popl, call, ret
  • halt, .pos, .align, .long
  • All registers
  • rdch, rdint, wrch, wrint
  • Any directives necessary to set a frame
  • You do not need to follow caller save nor callee save usage conventions
  • The following cheat sheet will be provided in the exam Assembly Cheat Sheet

The exam will NOT cover the following topics:

• Emacs, Debugger, Process Control (fork, exec, etc.), Unix I/O (read, write, open), Threads, Time Functions.

Practice Material

Practice material can be found in the grace system under 216public/exams/exam2

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