Download presentation

Presentation is loading. Please wait.

Published byFrances Motton Modified over 2 years ago

1
Programming Basics using Real-life examples

2
Activities Recipe Assembly instructions for a toy Map out the plan at amusement park A busy day schedule What is the common idea for all these activities?

3
Programming problem: Using sequence structure Compute the weighted score based on individual assignments’ scores. Let us say there are only 3 assignments & 2 exams, each with max score of 100. Respective weights are (10%, 10%, 10%, 35% and 35%) Sample input & output: Input: 100 100 100 95 95 Output: 96.5%

4
Pseudocode Prompt & get the score for assignment1 Prompt & get the score for assignment2 Prompt & get the score for assignment3 Prompt & get the score for exam1 Prompt & get the score for exam2 weightedScore = (assignment1 + assignment2 + assignment3) * 0.1 + (exam1 + exam2) *.35 output weightedScore

5
Activities Drive car or take DART bus? Party or study? Fly or drive? What is the common idea for all these activities?

6
Programming problem: using decision structure Get hourly pay rate & # of hours, compute the weekly pay, but do not pay for hours beyond 50. Sample inputs: Input: Pay Rate Input: Hours Output 15030Rs. 4500 15060Rs. 7500

7
Pseudocode Prompt & get hourly pay rate & # of hours IF hours <= 50 pay = hours * payRate; ELSE pay = 50 * payRate; ENDIF output pay

8
C code Prompt & get hourly pay rate & # of hours if (hours <= 50) pay = hours * payRate; else pay = 50 * payRate; output pay

9
Programming problem: using decision structure V2: Get hourly pay rate & # of hours, compute the weekly pay, but do not pay for >50 hours. Also, pay 1.5 times regular pay for overtime hours (that is, # of hours beyond regular 40 hours). First 40 hours: payRate Next 10 hours: payRate * 1.5 Beyond 50 hours: 0

10
pseudocode IF hours <= 40 pay = payRate * hours; ELSE IF hours <= 50 pay = payRate * 40 + payRate * 1.5 * (hours – 40); ELSE pay = payRate * 40 + payRate * 1.5 * 10;

11
pseudocode #2 overHours = hours – 40; IF hours <= 40 pay = payRate * hours; ELSE IF hours <= 50 pay = payRate * 40 + payRate * 1.5 * overHours; ELSE pay = payRate * 40 + payRate * 1.5 * 10;

12
pseudocode #3 hours = (hours > 50 ? 50 : hours); IF hours <= 40 pay = payRate * hours; ELSE pay = payRate * 40 + payRate * 1.5 * (hours – 40);

13
pseudocode #4 hours = (hours > 50 ? 50 : hours); IF hours <= 40 pay = payRate * hours; ELSE basePay = payRate * 40; overPay = payRate * 1.5 * (hours – 40); pay = basePay + overPay;

14
Activities Bring in tons of purchased items from car to house Load up uhaul truck when cleaning up apartment Eat cookies from a box Taking an exam that has several questions What is the common idea for all these activities?

15
Programming problem: Using repetition structure Compute the average score for the whole class.

16
Are we ready to code it?

17
Guessing game Guess a number between 1 and 100 in your mind. Write a program so that the computer will ask you a series of questions and determine that number based on your answers. Repeat the following steps as many times as needed: Computer asks, “Is it NN?” User responds with

19
Range – 2 variables: low = 1 and high = 100 compute mid = (low + high) / 2 Ask the user: Is it mid? Get user response adjust low or high based on response repeat as needed Pseudocode

20
Detailed pseudocode Initialize range – 2 variables: low = 1 and high = 100 do { compute mid = (low + high) / 2 Ask the user: Is it mid? Get user response if (response == ‘<‘) high = mid-1; else if (response == ‘>’) low = mid+1; while (response != ‘=‘);

21
Are we ready to code it?

22
Google for “Java random number generation”

23
Guessing game V2 – Role reversal Let the computer guess a number between 1 and 100. Write a program so that the computer will answer a series of your questions and you will determine the number based on computer’s responses.

24
Pseudocode Generate a random number between 0 and 100: assign rand() % 101 to a variable. then enter the loop – get a guess from the user – output, or = repeat until user enters =

25
Are we ready to code it? How to make the computer guess a number?

26
Summary All programs have only 3 control structures: Sequence, decision & repetition Problem description High level idea Detailed Pseudocode Implement in specific language Executable program

27
C++ strings Similar functionality to hangman game Write a method to return # of tries to guess all the letters in a given word. Sample run: Guess the letters in *******: s letters in s******:

28
Pseudocode for guessWord() bool guessed[100]; initialize to false using loop int exposedCount = 0; int len = word.length(); for(int i = 0; i < len ; i++) guessed[i] = false; do { for(int i = 0; i < len ; i++) cout << (guessed[i] ? word[i] : “*”); include code for getting next guess from the user and updating guessed[] array and exposedCount. } while (exposedCount < len);

Similar presentations

Presentation is loading. Please wait....

OK

CS001 Introduction to Programming Day 2 Sujana Jyothi

CS001 Introduction to Programming Day 2 Sujana Jyothi

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on water cycle for class 4 Ppt on high voltage engineering tutorial Ppt on tamper resistant labels How to run ppt on ipad Ppt on water the essence of life Ppt on nitrogen cycle and nitrogen fixation cycle Ppt on call center management Ppt on eddy current sensor Ppt on landing gear system for motorcycles Ppt on abstract artwork