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abstract assert boolean break byte case catch char class const continue default do double else enum extends final finally float for goto if implements import instanceof int interface long native new package private protected public return short static strictfp super switch synchronized this throw throws transient try void volatile while
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Let s start the exercise. 1. List the primary keywords you may see in conditional statements. 2. List the primary keywords you may see in iteration statements. 3. List the primary keywords you may see in transfer of control statements. 4. Bonus: List the primary keywords you may see in exception handling statements. While surfing the Internet, you ll find there is no universally accepted convention for pseudo-code. However, Table 2-6 gives you a general idea as to what you may expect on the exam. This information was reduced from the
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Pseudo-code Convention
variable := value IF condition THEN //statement sequence ELSEIF //statement sequence ELSE //statement sequence ENDIF CASE expression OF Condition A: statement sequence Condition B: statement sequence Default: sequence of statements ENDCASE
Java Example
wreckYear = 1511; if (wreckYear == 1502) wreck = "Santa Ana"; elseif (wreckYear == 1503) wreck = "Magdalena"; else wreck = "Unknown"; switch (wreckYear) { case 1502: wreck = "Santa Ana"; break; case 1503: wreck = "Magdalena"; break; default: wreck = "Unknown" } while (n < 4) { System.out.println(i); n++; } for (int i=0; i<j; i++) { System.out.println(i); }
switch statement
while statement
WHILE condition //statement sequence ENDWHILE FOR iteration bounds //statement sequence ENDFOR
for statement
Implementing Statement-Related Algorithms from Pseudo-code
PSEUDOCODE STANDARD page of the Cal Poly State University web site. The authors did a pretty good job proposing a standard.
Pseudo-code Algorithms and Java
The exam will give you a piece of pseudo-code and ask you to select the correct Java source code conversion. The code will likely be a fragment of a complete source file and while it is okay that some primitive declarations may be missing, conditional and iteration statements are always represented completely. Let s take a look at an example: Given:
fishingRods := 5 fishingReels := 4 IF fishingRods does not equal fishingReels THEN print "We are missing fishing equipment" ELSE print "The fishing equipment is all here" ENDIF
Answer:
int fishingRods = 5; int fishingReels = 4; if (fishingRods != fishingReels) System.out.print("We are missing fishing equipment"); else System.out.print("The fishing equipment is all here");
Three objectives on the exam have to do with producing Java code from pseudo-code algorithms.These objectives cover statement-related (objective 4.3), operator-related (objective 4.5), and variable scope related (objective 4.2) pseudo-code algorithms. The following three exercises will assist you in preparing for the pseudo-code-related questions on the exam.
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ExERCISE 2-4 Implementing Pseudo-code Algorithm #1
Given:
location := Corson's Inlet IF location != NULL THEN print "Fishing spot: " + location ENDIF
1. Convert the pseudo-code to Java. 2. Compile the Java source code and debug any errors and warnings. 3. Interpret the compiled bytecode.
ExERCISE 2-5 Implementing Pseudo-code Algorithm #2
Given:
IF waterTemperature greater than or equal to 69 THEN isStripersMostActive := false // Stripers are less active ELSEIF waterTemperature less than 69 but greater than 47 THEN isStripersMostActive := true // Stripers are most active ELSEIF waterTemperature less than or equal to 47 THEN isStripersMostActive := false // Stripers are less active ENDIF
1. Convert the pseudo-code to Java. 2. Compile the Java source code and debug any errors and warnings. 3. Interpret the compiled bytecode.
Certification Summary
ExERCISE 2-6 Implementing Pseudo-code Algorithm #3
Given:
fishingList = rods, reels, bait, lunch FOR EACH variable in fishingList print variable ENDFOR
1. Convert the pseudo-code to Java. 2. Compile the Java source code and debug any errors and warnings. 3. Interpret the compiled bytecode.
CERTIFICATION SUMMARY
This chapter on fundamental statements discussed details related to the fundamental statement types. By studying this chapter, you should now be able to recognize and develop the following types of statements:
n Expression statements, with a focus on the assignment statement n Conditional statements (if, if-then, if-then-else, and switch) n Iteration statements (for, enhanced for, while, and do-while) n Transfer of control statements (continue, break, and return)
The types of pseudo-code-related questions you can expect to see on the exam were covered in this chapter. To prepare you, we explored the basics of pseudo-code in detail and discussed how to convert statement-related pseudo-code algorithms to pure Java code. At this point, you should be well prepared for exam questions covering Java statements and relative pseudo-code being converted to Java.
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