COMP15111: Introduction to Architecture
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1 COMP15111 Lecture 9 1/33 COMP15111: Introduction to Architecture Lecture 9: Methods Pete Jinks School of Computer Science, University of Manchester Autumn 2011
2 COMP15111 Lecture 9 A Java Program 2/33 Lecture 9: You are here A Java Program Running A Java Program
3 OMP15111 Lecture 9 A Java Program 4/33 An example Java Program AgeHistory2 static int presentday, presentmonth, presentyear; void printagehistory (int person, birthday, birthmonth, birthyear) int someyear, ageinsomeyear1; System.out.println(...);... birthyear... presentyear... someyear... void main(string[] args) int birthday1, birthmonth1, birthyear1, = Integer.parseInt(args[...]); printagehistory(...); void println(string string) print(string); write(newline); void print(string string) write(nextchar);
4 COMP15111 Lecture 9 A Java Program 4/33 An example Java Program AgeHistory2 static int presentday, presentmonth, presentyear; void main(string[] args) int birthday1, birthmonth1, birthyear1, = Integer.parseInt(args[...]); printagehistory(...);
5 COMP15111 Lecture 9 A Java Program 4/33 An example Java Program AgeHistory2 static int presentday, presentmonth, presentyear; void printagehistory (int person, birthday, birthmonth, birthyear) int someyear, ageinsomeyear1; System.out.println(...);... birthyear... presentyear... someyear... void main(string[] args) int birthday1, birthmonth1, birthyear1, = Integer.parseInt(args[...]); printagehistory(...);
6 COMP15111 Lecture 9 A Java Program 4/33 An example Java Program AgeHistory2 static int presentday, presentmonth, presentyear; void printagehistory (int person, birthday, birthmonth, birthyear) int someyear, ageinsomeyear1; System.out.println(...);... birthyear... presentyear... someyear... void main(string[] args) int birthday1, birthmonth1, birthyear1, = Integer.parseInt(args[...]); printagehistory(...); void println(string string) print(string); write(newline);
7 COMP15111 Lecture 9 A Java Program 4/33 An example Java Program AgeHistory2 static int presentday, presentmonth, presentyear; void printagehistory (int person, birthday, birthmonth, birthyear) int someyear, ageinsomeyear1; System.out.println(...);... birthyear... presentyear... someyear... void main(string[] args) int birthday1, birthmonth1, birthyear1, = Integer.parseInt(args[...]); printagehistory(...); void println(string string) print(string); write(newline); void print(string string) write(nextchar);
8 COMP15111 Lecture 9 Running A Java Program 5/33 Lecture 9: You are here A Java Program Running A Java Program
9 COMP15111 Lecture 9 Running A Java Program 7/33 main starts
10 COMP15111 Lecture 9 Running A Java Program 9/33 parseint(...) main calls parseint (*6)
11 OMP15111 Lecture 9 Running A Java Program 11/33 parseint returns to main
12 COMP15111 Lecture 9 Running A Java Program 13/33 printagehistory(...) main calls printagehistory (*2)
13 COMP15111 Lecture 9 Running A Java Program 15/33 println(...) printagehistory(...) printagehistory calls println (*3?)
14 COMP15111 Lecture 9 Running A Java Program 17/33 print(...) println(...) printagehistory(...) println calls print
15 COMP15111 Lecture 9 Running A Java Program 19/33 write(...) print(...) println(...) printagehistory(...) print calls write (*n)
16 COMP15111 Lecture 9 Running A Java Program 21/33 print(...) println(...) printagehistory(...) write returns to print
17 COMP15111 Lecture 9 Running A Java Program 23/33 println(...) printagehistory(...) print returns to println
18 COMP15111 Lecture 9 Running A Java Program 25/33 write(...) println(...) printagehistory(...) println calls write
19 COMP15111 Lecture 9 Running A Java Program 27/33 println(...) printagehistory(...) write returns to println
20 COMP15111 Lecture 9 Running A Java Program 29/33 printagehistory(...) println returns to printagehistory
21 COMP15111 Lecture 9 Running A Java Program 31/33 printagehistory returns to main
22 COMP15111 Lecture 9 Running A Java Program 33/33 main finishes
26 Age history with a separate method 27 Method: void methods 28 Age history with a separate method 29 Age history with a separate method 33 Trying it
List of Slides 1 Title 2 Chapter 8: Separate methods and logical operators 3 Chapter aims 4 Section 2: Example:Age history with two people 5 Aim 6 Age history with two people 11 Trying it 12 Coursework:
(A) 99 (B) 100 (C) 101 (D) 100 initial integers plus any additional integers required during program execution
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(A) 99 ** (B) 100 (C) 101 (D) 100 initial integers plus any additional integers required during program execution
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