Lecture 4 4 September 2018 Admin Matters Unit 8: If Else Unit 9: - - PowerPoint PPT Presentation

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Lecture 4 4 September 2018 Admin Matters Unit 8: If Else Unit 9: - - PowerPoint PPT Presentation

Oct 17, 2023 260 likes •692 views

Lecture 4 4 September 2018 Admin Matters Unit 8: If Else Unit 9: Logical Expression Unit 10: Assertion How to do badly in CS1010 AY18/19 Sem 1 1. Ignore what Wei Tsang advised or announced during lecture AY18/19 Sem 1 2. Do not read / pay

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Lecture 4

Admin Matters Unit 8: If Else Unit 9: Logical Expression Unit 10: Assertion 4 September 2018

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AY18/19 Sem 1

How to do badly in CS1010

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AY18/19 Sem 1

1. Ignore what Wei Tsang advised or announced during lecture

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AY18/19 Sem 1

2. Do not read / pay attention to the guides and notes posted on CS1010 website

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AY18/19 Sem 1

3. Visit Piazza only when you have a question to ask yourself

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4. Wait for others to ask questions

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AY18/19 Sem 1

5. Wait for solutions from UDLs instead of trying the problems yourself.

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6. Expect assignments / tests / exams to be similar to problem sets / exercises

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7. Copy-paste sample code from lecture instead of writing it out yourself

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Tutorial 3
 Problem Sets from Unit 8-9 Today

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Assignment 1


Arithmetic Ops Recursive Function
 If-Else

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Assignment 1


Released this Friday Due next Friday

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Practical Exam 1

Your venue will be announced on Piazza soon. Acclimatize yourself.

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Midterm

Venue: MPSH 1 (B) 2 October 4pm - 6pm

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Catch Up Session This Saturday UNIX / vim (the basic)

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AY18/19 Sem 1

Catch Up Session Must have read through the UNIX tutorial and have gone through vimtutor.

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AY18/19 Sem 1

Catch Up Session Please register online by end of tomorrow. (see Piazza post)

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AY18/19 Sem 1

Reminder Use XShell on the PCs in our labs to ssh into the PE hosts and code.

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Reminder Read plagiarism and late submission policy on the CS1010 website.

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Readings Overview about your programming assignments.

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https://kahoot.it

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long square(long x) { return x*x; } double hypotenuse_of(long base, long height) { return sqrt(square(base) + square(height)); } int main() { : hypotenuse = hypotenuse_of(base, height); : }

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Where are we in CS1010? Behavioural / Mental model Tools / Good Practice Problem Solving C language / syntax

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Where are we in CS1010? Behavioural / Mental model Tools / Good Practice decomposition recursion flowchart Problem Solving C language / syntax

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Where are we in CS1010? Behavioural / Mental model Tools / Good Practice decomposition recursion flowchart types in C functions in C arithmetic ops Problem Solving C language / syntax

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Where are we in CS1010? Behavioural / Mental model Tools / Good Practice decomposition recursion flowchart types in C functions in C arithmetic ops machine code data in memory types Problem Solving C language / syntax

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Where are we in CS1010? Problem Solving C language / syntax Behavioural / Mental model Tools / Good Practice decomposition recursion flowchart types in C functions in C arithmetic ops machine code data in memory types clang vim bash

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Today Problem Solving C language / syntax Behavioural / Mental model Tools / Good Practice decomposition recursion flowchart
 conditionals assertion types in C functions in C arithmetic ops if else logical expressions machine code data in memory types clang vim bash

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Lecture 4

Admin Matters Unit 8: If Else Unit 9: Logical Expression Unit 10: Assertion 4 September 2018

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m = l0 i = 1 i equals k? return m

YES

is li > m ? m = li i += 1

YES NO NO

input k and l0..lk-1

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n equals 0? return 1

NO YES

input n return 
 n * factorial(n-1)

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long factorial(long n) { if (n == 0) { return 1; } return n * factorial(n - 1); }

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AY18/19 Sem 1

Need to reason about all possibilities

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Score Letter Grade

8 or higher A Less than 8 but 5 or higher B Less than 5 but 3 or higher C Less than 3 D

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Score Letter Grade

5 or higher B Less than 5 See Table 2

Score Letter Grade

8 or higher A Less than 8 See Table 1

Table 1 (Less than 8)

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Score Letter Grade

5 or higher B Less than 5 See Table 2

Table 1 (Less than 8) Table 2 (Less than 5)

Score Letter Grade

3 or higher C Less than 3 D

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if (score >= 8) if (late_penalty != 0) cs1010_println_string("late submission”); else cs1010_println_string("you can do better!”);

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if (score >= 8) { if (late_penalty != 0) { cs1010_println_string("late submission”); } else { cs1010_println_string("you can do better!”); } } if (score >= 8) { if (late_penalty != 0) { cs1010_println_string("late submission”); } } else { cs1010_println_string("you can do better!”); }

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The bool data type can take two values true or false

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#include <stdbool.h>

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&& || !