Lab46 Wiki

• Project
  • dsi0 due around 9/10

struct node//name of struct "node"
{
   signed short int value;//holds the value of the node
   struct node *next;//points to the next node
};

typedef struct node Node;//allows you to use Node rather then typing out struct node every time

Node *tmp = NULL;//creates first node using typedef
struct node *tmp2 = NULL;//creates 2nd node using struct

tmp = (Node*)malloc(sizeof(Node));//gets memory for the first node
tmp->next=NULL;//set the next pointer of the node struct to null

tmp->next=(Node*)malloc(sizeof(Node));//creates 2nd node
tmp->next->next= NULL;//sets 2nd node next to NULL
tmp2 = tmp->next;//tmp2 is the node after tmp

tmp->value= 7;// sets first node value to 7
tmp2->value= 13;//sets 2nd node value to 13

• Absent

• Node functions
  • create
    • makes a node
  • copy
    • copies the data in a node
  • remove
    • deleted a node
• List function
  • create
    • creates a list of nodes whether empty or not
  • copy
    • copies a list to another to alter data
  • clear
    • clears the data in a node
  • insert
    • insert the node before the selected node
  • append
    • adds the node after the selected node
  • obtain
    • gets a node whether to move it or get ready to clear it
  • setpos
    • sets position of pointer
    • Example: tmp = setpos(myList,2);sets tmp pointer to index two in the list struct * getpos * gets position of pointer * Example: x = getpos(myList, tmp);gets the position of the pointer tmp

struct list{
   struct list *start;//pointer that is positioned to the start of the list
   struct *end;//pointer that is positioned at the end of the list
   int qty;//shows the quantity of nodes in a list
};

• gcc -g filename.c -o filename

• Compile
  • gcc filename.c -o filename
  • gcc -o filename filename.c
  • gcc -o filename filename.c -g
  • gdb ./filename to run file after compile using the debugger
• Debugger tools
  • backtrace: allows you to see previous steps that got you to where you are
  • list “line”: shows the line you specified and some above and bellow
  • break point: tell debugger to stop at that point and stop running
  • print: prints out the value of variable you pass
  • step: runs one line then stops but follow functions
  • next: same as step but skips over functions
  • continue: goes until next breakpoint
  • display: set variable displays to show values every time something display
  • watch: stops execution of your program whenever the value of an expression changes
  • set var: set variable to a specified value

• Reviewed and talked about the different ways we could of done sln0
• Advice:
  • think of all the possibilities before you start writing code
  • Don't be trapped by tradition thinking methods
    • Example in sln0: start loops for the end and move index from there

• Run a test in sln1 or bin
  • run in the sln1 or bin directory
• Use make to compile but from sln1 directory
• Verify test: is just for a pass or fail
• Unit Test: shows the answer and what you have
• Make check: runs all verify tests to see how much tests you pass or fail

• sln1:
  • mknode, conode, rmnode
  • node-app-arrtolist
  • node-app-display
  • node-app-display2

• Went on a little bit of a hiatus due to work and person circumstances
• sll0 due 9/30 at midnight
  • requires to write functions such as mklist(), displayf(), getpos(), setpos(), and insert()

• Status data: used to see grades and progress
• Status data detail: goes into further details on grades and projects
• Reviewed sln1 to see possible improvements
• s110 due Wednesday by midnight

• Talked a little about the project then was given the last 40-30 mins to work on project

• absent