Programming foundations

• Chaitra knows how to + - * / // % == < >
  
• Chaitra can rememeber values as long as you are referring with names

Remember 10 as number => number = 10
Add 1 to the number => number = number + 1

Problem: Let solve the problem of area of circle

• formula Ï€*r*r
• Solution

Hi chaitra
pi = 3.14
radius = 1
result = pi * radius * radius
say result

Problem: Lets solve the problem of simple intrest

• inputs
  • principal
  • time (in years)
  • rate of intrest
• forumla

p * t * r / 100

• Solution

Hi Chaitra
p = 10000000
t = 5
r = 24
si = p * t * r / 100
say si

Problem: Lets solve the problem of Converting degrees into farnhiet

• Input: celcius
• Formuala: (C × 9/5) + 32
• Chaitra evaluates operators according to python operator precedence
• Solution:

Hi Chaitra
c = 50
f = (c * (9 / 5)) + 32

Operator Precedence

• This defines the priority
  

Problem

• Ask chaitra to say number 5 times

number = 5
repeat 5 times and rememeber count in index
    say number

• other

number = 5
index = 0
until index < 5 
    say number
    index += 1

• I want Chaitra to calculate gst on popcorn

popcorn = caramel
price = 1000
if popcorn == normal 
    tax = price * 5 / 100
if popcorn == salted
    tax = price * 12 / 100
if popcorn == caramel
    tax = price * 18 / 100

total = price + tax
say total

Factorial of a number

• input = number
• solution

Hi Chaitra
number = 5
index = 1
factorial = 1
until index <= number
    factorial = factorial * index
    index = index + 1
say factorial

Project euler 1

• Project euler
• Problem 1
• Solution

Hi chaitra
index = 1
result = 0
number = 10
until index < number
  is_multiple = (index % 3 == 0) or (index % 5 == 0)
  if is_multiple == True
    result = result + index
  index = index + 1
say result

Project euler 2

• Lets solve fibonnaci sequence

a = 1
b = 2
say a
say b
max = 30
until (a + b) <= max
    c = a + b
    say c
    a = b
    b = c