SE250:lab-8:sbha077
Lab 8 Report
Crazy! The parsetree.c file does not compile unless you fix a couple of errors here and there. Lab-8.c <-- its useless. OK, thats part of task 1 as well. Now, for the other tasks.
I really really say a big thank you to Braedon and Jason. They have corrected and fixed the most vital parts of the file that have made this lab possible! So yay for them!!
Task 1
Download parsetree.c file from the net. Task 1...DONE!
Task 2
To get the output of -(-(a b)), I first tried using the command to print 1+2 as in the handout. Then I simply modified the line to get the appropriate output. It worked!! :D
int main (void) {
ParseTree* t = mkNode( '-', mkNode( '-' ,mkNode( 'a', 0 ), mkNode( 'b', 0 ), 0) ,0);
prefix_tree(t);
return 0;
}
<html><img src="http://img218.imageshack.us/img218/6662/tree1ye2.png"></html>
Task 3
Horrible horrible horrible. It took me forever to do this and here's my code for it!
int main (void) {
ParseTree* t2 = mkNode( '?', mkNode( '>', mkNode( '+', mkNode( 'a', 0 ), mkNode( 'b', 0), 0), mkNode( 'c', 0), 0),
mkNode( '*', mkNode( 'z', 0), mkNode( '+', mkNode( 'y' ,0), mkNode( 'b', 0), 0), 0), mkNode('?', mkNode( '=', mkNode( 'a', 0),
mkNode( '2', 0), 0), mkNode( '-', mkNode( 'x', 0), mkNode( 'y', 0), 0), mkNode( '-', mkNode( 'y', 0), mkNode( 'x', 0), 0), 0), 0);
prefix_tree(t2);
return 0;
}
Task 4
<html><img src="http://img218.imageshack.us/img218/8364/tree2kz6.png"></html>
Task 5
I have no clue!
Task 6
Don't really know how to do this