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# CS1010: Programming Methodology

## CS1010: Programming Methodology

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## Presentation on theme: "CS1010: Programming Methodology"— Presentation transcript:

Slide1

CS1010: Programming Methodology http://www.comp.nus.edu.sg/~cs1010/

Slide2

Week 5: Repetition Statements

Objectives:

Understand the program control structure called loops

Compare the different types of repetition structure

CS1010 (AY2012/3 Semester 1)

Week5 - 2

References:

Chapter 4

Lessons

4.7 –

4.11

Slide3

Week 5: Outline (1/2)

Week 4 Exercise #3: NRIC Check Code

Loops!

The

while

Loop

3.1 Demo

3.2 Loop condition

3.3 TracingThe do-while LoopThe for Loop5.1 Odd IntegersExercise #1: Sum of Multiples of 3Exercise #2: Asterisks

CS1010 (AY2012/3 Semester 1)

Week5 -

3

Slide4

Week 5: Outline (2/2)

Common Errors

Some Notes of Caution

Exercise #3: Tracing Nested Loops

Using

break

in Loop

Using

continue in LoopExercise #4: Prime Number (take-home)CS1010 (AY2012/3 Semester 1)Week5 - 4

Slide5

1. Week 4 Exercise #2: Taxi Fare (1/3)

The taxi fare structure in Singapore must be one of the most complex in the world! See

http://www.taxisingapore.com/taxi-fare/

Write a program

Week4_TaxiFare.c that reads the following input data (all are of int type) from the user, and computes the taxi fare:

dayType: 0 represents weekends and public holidays (PH for short); 1 represents weekdays and non-PH

boardHour

,

boardMin: the hour and minute the passengers board the taxi (eg: 14 27 if the passengers board the taxi at 2:27 PM)distance: the distance of the journey, in metresYour program should have a function float computeFare(int dayType, int

boardTime

,

int

distance)

The parameter

boardTime

is converted from the input data boardHour and boardMin. It is the number of minutes since 0:00hr.Eg: If boardHour and boardMin are 14 and 27 respectively, then boardTime is 867.

Week4 - 5

CS1010 (

AY2012/3

Semester 1)

Slide6

1. Week 4 Exercise

#2: Taxi Fare (2/3)

To implement the actual taxi fare could be a PE question

. In this exercise, we use a (grossly) simplified fare structure:

Basic Fare:

Surcharge

(applicable at the time of boarding):

Week4 -

6CS1010 (AY2012/3 Semester 1)Flag-down (inclusive of 1st km or less)\$3.40Every 400m thereafter or less up to 10.2km

\$0.22

Every 350m thereafter or less after 10.2km

\$0.22

dayType

Midnight charge (12am – 5:59am)

Peak hour charge (6am – 9:29am)

Peak

hour charge (6pm – 11:59pm)0: Weekends & PH50% of metered fareNone25% of metered fare1: Weekdays and non-PH

50% of metered fare25% of metered fare25% of metered fare

Slide7

1. Week 4 Exercise #2: Taxi Fare (3/3)

You are given an incomplete program

Week4_TaxiFarePartial.c

. Complete the program. This exercise is mounted on

CodeCrunch.Sample runs below for your checking

Week4 -

7

CS1010 (

AY2012/3 Semester 1)Day type: 0Boarding hour and minute: 14 27Distance: 10950

Total taxi fare is

\$9.12

First 1km: \$3.40

Next 9.2km: 23

\$0.22 = \$5.06

Next 750m: 3

\$0.22 = \$0.66Basic fare = \$9.12No surchargeTotal fare = \$9.12Day type: 1

Boarding hour and minute: 9 20

Distance:

6123

Total taxi fare is

\$7.83

First 1km: \$3.40

Next 5123m: 13

\$0.22 = \$2.86

Basic fare = \$6.26

Surcharge = 25%  \$6.26 = \$1.57

Total fare = \$7.83

Day type:

1

Boarding hour and minute:

5 59

Distance: 9000Total taxi fare is \$11.70

First 1km: \$3.40

Next 8km: 20

\$0.22 = \$4.40

Basic fare = \$7.80

Surcharge = 50%  \$7.80 = \$3.90

Total fare = \$11.70

Slide8

1. Week 4 Exercise #2: Taxi Fare

Week4 -

8

CS1010 (

AY2012/3 Semester 1)

float

computeFare

(

int daytype, int bTime, int

dist

)

{

basicFare

=

calcBasicFare(dist) ; return includeSurcharge

(basicFare,

daytype

,

bTime

) ;

}

float

calcBasicFare

(

int

dist

){

// Pre-

cond

: 0 <= dist ; if (dist

<= 1000)

return 3.40;

else

if

(

dist

<= 10200

&&

dist

> 1000

)

return (3.40

+

ceil((

dist

- 1000) /

400.0) * INCREMENT);

else

if

(

dist

> 10200)

return (3.40

+

9200 / 400.0 * INCREMENT +

(ceil((

dist

-

10200)

/

350.0))

*

INCREMENT);

}

Slide9

1. Week 4 Exercise #2: Taxi Fare

Week4 -

9

CS1010 (

AY2012/3 Semester 1)

float

computeFare

(

int daytype, int bTime, int

dist

)

{

basicFare

=

calcBasicFare(dist) ; return includeSurcharge

(basicFare,

daytype

,

bTime

) ;

}

float

includeSurcharge

(float fare,

int

dType

,

int

bTime

){ // Pre-cond: dType

= 0 or 1, 0 <=

bTime

<= 2359 ;

if (

bTime

< 360

&& (

dType

== 0 ||

dType

== 1

)

)

return fare * 1.50;

else

if

(

dType

== 1 && (

bTime

< 600

&&

dtime

>=360

))

return fare * 1.25;

else if (

b

Time

>= 1080)

return fare * 1.25;

else return fare ;

}

Slide10

1. Week 4 Ex3: NRIC Check Code (1/3)

Algorithm for NRIC check code

NRIC consists of 7 digits.

Eg: 8730215

Step 1: Multiply the digits with corresponding weights

2,7,6

,

5

,4,3,2 and add them up.Eg: 82 + 77 + 36 +

05

+

2

4

+

1

3 + 52 = 16+49+18+0+8+3+10 = 104Step 2: Divide step 1 result by 11 to obtain the remainder.Eg: 104 % 11 = 5

Week5 - 10

Week5 -

10

CS1010 (AY2012/3 Semester 1)

Slide11

1. Week 4 Ex3: NRIC Check Code (2/3)

Algorithm for NRIC check code (cont…)

Step 3: Subtract step 2 result from 11

Eg: 11 – 5 = 6

Step 4: Match step 3 result in this table for the check code

Eg: The check code corresponding to 6 is ‘F’.

Therefore, the check code for

8730215

is ‘F’.Sample run:1

2

3

4

5

6

7

8

9

10

11

A

B

C

D

E

F

G

H

I

Z

J

Week5 -

11

Week5 -

11

Enter 7-digit NRIC number:

8730215

Check code is

F

CS1010 (AY2012/3 Semester 1)

Slide12

1. Week 4 Ex3: NRIC Check Code (3/3)

Write a program

Week4_NRIC.c

to generate the check code given a 7-digit NRIC number.Your program should include a function char

generateCode(int

) that takes in a single integer (the NRIC number) and returns a character (which is the check code).

You need to use the

char

type. (Explore this on your own.)A character constant is enclosed in single quotes (eg: 'A', 'Z').The format specifier for char type is %c (to be used in a printf() statement).Do not use techniques that are not covered in class, such as array. Your program may be long now. You can write an improved version later.This is your take-home exercise.This exercise is mounted on CodeCrunch.

Week5 -

12

Week5 -

12

CS1010 (AY2012/3 Semester 1)

Slide13

1. Week 4 Ex3: NRIC Check code

Step 1

: Multiply the digits with corresponding weights

2,

7,6,

5,4,3

,

2

and add them up.Eg: 82 + 77 + 36 + 05 +

2

4

+

1

3

+

52 = 16+49+18+0+8+3+10 = 104 // Extract the digits digit7 = num%10; num

/= 10; digit6 = num%10;

num

/= 10;

digit5 = num%10;

num

/= 10;

digit4 = num%10;

num

/= 10;

digit3 = num%10;

num

/= 10;

digit2 = num%10;

num

/= 10;

digit1 = num%10;

step1 = digit1*2 + digit2*7 + digit3*6 + digit4*5 + digit5*4 + digit6*3 + digit7*2

;

Week5 -

13

Week5 -

13

Slide14

1. Week 4 Ex3: NRIC Check code

Step

2: Divide step 1 result by 11 to obtain the remainder.

Eg

: 104 % 11 = 5

step2 = step1 % 11;

Step 3: Subtract step 2 result from 11

Eg

: 11 – 5 = 6step3 = 11 - step2;Week5 - 14Week5 - 14CS1010 (AY2012/3 Semester 1)

Slide15

1. Week 4 Ex3: NRIC Check Code

Step

4: Match step 3 result in this table for the check code

switch

(step3) {

case 1: code = 'A'; break;

case 2: code = 'B'; break;

case 3: code = 'C'; break;

case 4: code = 'D'; break; case 5: code = 'E'; break; case 6: code = 'F'; break; case 7: code = 'G'; break; case 8: code = 'H'; break;

case 9: code = 'I'; break;

case 10: code = 'Z'; break;

case 11: code = 'J';

} // end

switch

1

2

3

4

5

6

7

8

9

10

11

A

B

C

D

E

F

G

H

I

Z

J

Week5 -

15

Week5 -

15

CS1010 (AY2012/3 Semester 1)

Slide16

Recall: Control Structures

Week5 -

16

Week5 - 16

Sequence

Selection

Repetition

if-else, switch

CS1010 (AY2012/3 Semester 1)

Slide17

2. LOOPS! (1/2)

Week5 -

17

Week5 - 17

“A program without a loop and a structure variable isn’t worth writing.”

Alan

J.Perlis

Yale University

The first recipient of ACM Turing AwardA loop is a statement

whose job is to

repeatedly

execute some other statement(s).

CS1010 (AY2012/3 Semester 1)

Slide18

2. LOOPS! (2/2)

Week5 -

18

cond

?

Some

statement(s)

true

false

loop body

Loop condition

Week5 -

18

Each round of the loop is called an

iteration

.

CS1010 (AY2012/3 Semester 1)

Slide19

2. Loop: Demo (1/3)

Keep prompting the user to input a non-negative integer, and output that integer.

Halt the loop when the input is negative.

Enter a number:

12

You entered: 12

Enter a number:

0

You entered: 0Enter a number: 26You entered: 26Enter a number: 5You entered: 5Enter a number: -1Week5 - 19Week5 - 19

Key observations:

You keep repeating a task while certain condition is met, or alternatively, you repeat until the condition is not met.

You do not know beforehand

how many iterations there will be.

CS1010 (AY2012/3 Semester 1)

Slide20

2. Loop: Demo (2/3)

int

main(void) {

int

num;

printf

("Enter a number: "); scanf("%d", &num); if (num < 0) return 0; printf("You entered: %d\n", num); printf("Enter a number: ");

scanf("%d", &num

);

if

(num < 0) return

0;

printf("You entered: %d\n", num); printf("Enter a number: ");

scanf("%d", &num);

....

}

Week5 -

20

Week5 -

20

Loop condition

Enter a number:

12

You entered: 12

Enter a number:

0

You entered: 0

Enter a number:

26

You entered: 26

Enter a number:

5

You entered: 5

Enter a number:

-1

Loop body

CS1010 (AY2012/3 Semester 1)

Slide21

2. Loop: Demo (3/3)

Week5 -

21

num

>= 0?

printf

printf

… scanf …truefalse

Week5 -

21

CS1010 (AY2012/3 Semester 1)

int

main(

void

) {

int

num;

printf

(

"Enter a number: "

);

scanf

(

"

%d

"

, &num);

while (num >= 0) {

printf

(

"You entered:

%d\n

"

, num);

printf

(

"Enter a number: "

);

scanf(

"

%d

"

, &num);

}

Slide22

3. The while

Loop

CS1010 (AY2012/3 Semester 1)

Week5 - 22

while (

condition

)

{ // loop body}cond?

Loop body

true

false

If condition is

true

, execute

loop body; otherwise, terminate loop.

Slide23

3.1 The while

Loop: Demo (1/3)

Enter a number:

12Enter a number:

0Enter a number:

26

Enter

a number: 5Enter a number: -1The maximum number is 26Week5 - 23Week5 - 23CS1010 (AY2012/3 Semester 1)

Keep prompting the user to input a non-negative integer, and output that integer.

Halt the loop when the input is negative,

and output the maximum integer input so far.

Slide24

3.1 The while

Loop: Demo (2/3)

Week5 - 24

maxi = 0;

num

input;

while (num >= 0) { if (maxi < num) maxi = num; num

input;

}

print maxi;

maxi = 0;

num

input; if (

num < 0) {

print maxi; stop;

}

if (maxi < num)

maxi = num ;

num

input;

if (

num

< 0) {

print maxi; stop;

}

if (maxi < num)

maxi = num;num  input;...Week5 - 24

CS1010 (AY2012/3 Semester 1)

Slide25

3.1 The while

Loop: Demo (3/3)

Week5 - 25

Week5 -

25

CS1010 (AY2012/3 Semester 1)

int

main(void) { int num, maxi =

0

;

printf

(

"Enter a number: "

);

scanf("%d

", &num);

while

(num >= 0) {

if

(maxi < num) {

maxi = num;

}

printf

(

"Enter a number: "

);

scanf(

"

%d

", &num); } prinf("The maximum number is

%d\n

"

, maxi);

return

0

;

}

Week5_Find_max.c

Slide26

3.2 while

Loop

Condition (1/2)

When the loop condition is always false

, the loop body is not executed.

Week5 -

26

Output:

?

Week5 -

26

CS1010 (AY2012/3 Semester 1)

a = 2;

b = 7;

while (a == b) {

print a;

a = a + 2;

}

Slide27

3.2 while

Loop

Condition (2/2)Week5 -

27

Output:

?

Week5 -

27

CS1010 (AY2012/3 Semester 1)

a = 2;

b = 7;

while (a != b) {

print a;

a = a + 2;

}

Slide28

3.3 Tracing while

Loop (1/4)

Trace the following codes manually and write out their outputs (assume all variables are of type

int)

Week5 -

28

CS1010 (AY2012/3 Semester 1)

a =

1

;

while

(a*a <

100

) {

printf("%d ", a); a *=

2;}

printf

(

"

\n

"

);

(a)

b =

0

; c =

9

;

while

(b < c) {

printf("b=%d,

c=

%d\n

"

, b, c);

b++; c--;

}

printf

(

"outside: b=

%d

,

c=

%d\n

"

, b, c);

(b)

Slide29

3.3 Tracing while

Loop (2/4)

Example: Given a positive integer

n, print out its digits from least significant to most significant.

Sample run:

Week5 -

29

Enter a positive integer: 289433

49

8

2

CS1010 (AY2012/3 Semester 1)

Slide30

3.3 Tracing while

Loop (3/4)

Example: Given a positive integer

n, print out its digits from least significant to most significant.

Week5 -

30

CS1010 (AY2012/3 Semester 1)

//

Precond

: n > 0

void

print_digits

(

int

n) { int digit;

while

(n >

0

) {

digit = n%

10

;

printf

(

"

%d\n

"

, digit);

n /=

10; }}Week5_Print_digits.c

Slide31

//

Precond

: n > 0

void

print_digits

(

int

n) { int digit; while (n >

0

) {

digit = n%

10

;

printf

("%d\n", digit);

n /= 10;

}

}

Week5_Print_digits.c

3.3 Tracing

while

Loop (4/4)

Week5 -

31

n initially

28943

n @ point

29843

digit @ point

***

What are the values of

n

and

digit

after exiting the loop?

CS1010 (AY2012/3 Semester 1)

Slide32

4. The do-while

Loop (1/2)

Week5 - 32

do

{ // loop body} while (

condition

);

Execute loop body at least once.cond?

Loop

body

true

false

CS1010 (AY2012/3 Semester 1)

Slide33

4. The do-while

Loop (2/2)

Example: Count the number of digits in an integer.

Week5 -

33

do

{

// loop body} while ( condition );CS1010 (AY2012/3 Semester 1)

//

Precond

: n > 0

int

count_digits

(

int n

) {

int

counter =

0

;

do

{

counter++;

n /=

10

;

}

while

(n >

0

); return counter;

}

Week5_Count_digits.c

Slide34

5. The for

Loop (1/2)

Week5 -

34

for (

initialization; condition; update

)

{

// loop body}Initialization: initialize the loop variable

Condition:

repeat loop while the condition

on

loop variable

is

true

Update: change value of loop variable

CS1010 (AY2012/3 Semester 1)

Slide35

5. The for

Loop (2/2)

Example: Print numbers 1 to 10

Week5 -

35

int

n;

for (n=1; n<=10; n

++) {

printf

("%3d", n);

}

Steps:

n=1;

if

(n<=10)

{ printf(…);

n

++;

Go to step 2

}

Exit the loop

CS1010 (AY2012/3 Semester 1)

Slide36

5.1 The for

Loop: Odd Integers (1/2)

Week5 -

36

CS1010 (AY2012/3 Semester 1)

#include

<

stdio.h

>void print_odd_integers(int);

int

main(

void

) {

int

num; printf("Enter a positive integer: "

);

scanf

(

"

%d

"

, &num);

print_odd_integers

(num);

return

0

;

}// Precond: n > 0

void

print_odd_integers

(

int

n

) {

int

i

;

for

(

i

=

1

; i<=n; i+=2) printf("%d ", i); printf("\n");}Week5_OddIntegers_v1.c

Slide37

5.1 The for

Loop: Odd Integers (2/2)

Week5 -

37

CS1010 (AY2012/3 Semester 1)

//

Precond

: n > 0

void print_odd_integers(int n) {

int

i

;

for

(i=1; i<=n; i

++)

if

(i%

2

!=

0

)

printf

(

"

%d

"

,

i

);

printf("\n");}

Week5_OddIntegers_v2.c

//

Precond

: n > 0

void

print_odd_integers

(

int

n

) {

for

( ; n >

0

; n--)

if

(n%2 != 0) printf("%d ", n); printf("\n");}Week5_OddIntegers_v3.cValues printed from largest to smallest.Empty statement

Slide38

6. Exercise #1: Sum of Multiples of 3 (1/2)

Modify the program

Week5_OddIntegers_v1.c

to read a positive integer n and then compute the sum of all integers which are multiples of 3 between 1 and n using a ‘for’ loop. Write a function called

sum_multiples_of_3(int

).This problem can be solved with a formula, but we will use the ‘while’ loop just for exercise.

Call this program

Week5_SumMultiples3.c

Sample run:Week5 - 38

Enter a positive integer:

50

Sum = 408

CS1010 (AY2012/3 Semester 1)

Slide39

6. Exercise #1: Sum of Multiples of 3 (2/2)

How about using a while loop instead?

Pseudo-code using a while loop:

Week5 -

39

CS1010 (AY2012/3 Semester 1)

precondition: n

> 0

sum

0

i

n

while

i

> 0

if

i

is multiple of 3 then

sum

 sum +

i

i

i

- 1

return sum

Slide40

7. Exercise #2: Asterisks (1/2)

Write a program

Week5_Asterisks.c

to read an integer n and print a certain number of asterisks on a single line. Write a function

print_asterisks(int

).If

n

is non-positive, then no asterisk should be printed.

Sample runs:Week5 - 40

Enter n: 3

*****

Done!

Enter n:

6

***********

Done!

Enter n:

10*******************Done!

Enter n:

-2

Done!

Think!

What is the relationship between

n

and the number of *?

CS1010 (AY2012/3 Semester 1)

Slide41

7. Exercise #2: Asterisks (2/2)

Write a program

Week5_Asterisks.c

to read an integer n and print a certain number of asterisks on a single line. Write a function

print_asterisks(int

).Week5 -

41

CS1010 (AY2012/3 Semester 1)

Pseudo-code:read input n ;

if n is non-positive

print “done” and end program ;

m

compute the number of asterisks given n

print_asterisks

(m)

end program;

Slide42

8. Common Errors (1/2)

What are the outputs for the following programs?

(Do not code and run them. Trace the programs manually.)

Week5 -

42

CS1010 (AY2012/3 Semester 1)

int

i

;

for

(

i

=

0; i

<

10

;

i

++);

printf

(

"

%d\n

"

,

i

);

Week5_CommonErrors1.c

int

i

=

0

;

while

(

i

<

10

);

{

printf

(

"

%d\n", i); i++; }Week5_CommonErrors2.c

Slide43

8. Common Errors (2/2)

Off-by-one error; make sure the loop repeats exactly the correct number of iterations.

Make sure the loop body contains a statement that will eventually cause the loop to terminate.

Using ‘=’ where it should be ‘==’

Putting ‘;’ where it should not be (just like for the ‘if’ statement)

Week5 -

43

CS1010 (AY2012/3 Semester 1)

int

z =

3

;

while

(z = 1) {

printf

(

"z =

%d\n

"

, z);

z = 99;

}

Week5_CommonErrors3.c

Slide44

9. Some Notes of Caution (1/2)

Involving real numbers

Trace the program manually without running it.

Week5 -

44

CS1010 (AY2012/3 Semester 1)

double

one_seventh

=

1.0

/

7.0

;

double

f =

0.0;

while

(f !=

1.0

) {

printf

(

"

%f\n

"

, f);

f +=

one_seventh

;

}

Week5_Caution1.c

Slide45

9. Some Notes of Caution (2/2)

Involving ‘wrap-around’

Trace the program manually without running it.

Week5 -

45

CS1010 (AY2012/3 Semester 1)

int

a =

2147483646

;

int

i

;

for

(

i

=

1

;

i

<=

5

;

i

++) {

printf

(

"

%d\n

", a); a++;}Week5_Caution2.c

Slide46

10. Exercise #3: Tracing Nested Loops

You are given

Week5_NestedLoop1.c

, Week5_NestedLoop2.c and

Week5_NestedLoop3.c

Hand trace the programs and write out the outputs without running the programs

Verify your answers by running the programs

Week5 -

46CS1010 (AY2012/3 Semester 1)

Slide47

11. Using break

in Loop (1/2)

You have seen ‘break’ in switch statement

‘break’ can also be used in a loop

Test out

Week5_BreakInLoop.c

Week5 -

47

CS1010 (AY2012/3 Semester 1)

Slide48

11. Using break

in Loop (2/2)

Use ‘break’

sparingly

, because it violates the one-entry-one-exit control flow.

A loop with ‘break’ can be rewritten into one without ‘break’.

Week5 -

48

CS1010 (AY2012/3 Semester 1)// with break

int

n,

i

=

1

, sum =

0;while (

i <= 5

) {

scanf

(

"

%d

"

, &n);

if

(n <

0

)

break

; sum += n; i++;}

// without break

int

n,

i

=

1

, sum =

0

;

int

isValid

=

1

;

while

((

i <= 5) && isValid){ scanf("%d", &n); if (n < 0) isValid = 0; else { sum += n; i++; }}

Slide49

12. Using continue

in Loop

Test out

Week5_ContinueInLoop.c

‘continue’ is used even less often than ‘break’

Week5 -

49

CS1010 (AY2012/3 Semester 1)

Slide50

13. Exercise #4: Prime Number (1/2)

Primality

test

is a classic programming problem

Given a positive integer, determine whether it is a prime

A prime number has two distinct factors (divisors): 1 and itself. Examples: 2, 3, 5, 7, 11, ... (Note: 1 is not a prime!)

Write a program

Week5_PrimeTest.c

. You should include a function is_prime(int). (What does it return?)Sample runs:

Week5 - 50

Enter a positive integer:

131

131 is a prime.

Enter a positive integer:

713

713 is not a prime.

CS1010 (AY2012/3 Semester 1)

Slide51

13. Exercise #4: Prime Number (2/2)

This is your

take-home exercise

.This exercise is mounted on

CodeCrunch.

We will discuss this in the next lecture.

Week5 -

51

CS1010 (AY2012/3 Semester 1)

Slide52

Summary for Today (1/2)

Week5 -

52

Repetition statements (loops)

for

,

while

,

do-whileNested loopsbreak and continueCS1010 (AY2012/3 Semester 1)

Slide53

Summary for Today (2/2)

Week5 -

53

You have learned the 3 control structures:

Sequence, Selection, Repetition

With these, you are able to solve just any

computing problem!

However, writing good programs is

more than just learning the syntax:Logic should be clearVariables should be descriptiveAlgorithm should be efficientCS1010 (AY2012/3 Semester 1)

Slide54

Announcements/Things-to-do

Revise Chapter 4 (Lessons 4.7 – 4.11)

Deadline for Lab #2

th

September 2012, Saturday, 12noon

Practical

Exam 1 (PE1

)22nd September 2012, SaturdaySee web page for details:http://www.comp.nus.edu.sg/~cs1010/3_ca/pe.html To prepare for next week’s lecture:Read Chapter 5 Functions

Bring along your

Week5_PrimeTest.c

program

Week5 -

54

CS1010 (AY2012/3 Semester 1)

Slide55

End of File