1. function_example.py
2. module_example.py
3. pick4.py
4. print_examples.py
5. random_test.py
6. sum5_constant.py
7. sum5_no_loop.py
8. sum5.py

# Examples using built-in functions
# Sara Sprenkle

x = 6.817454321
#x = 5.6512542

print("We start with x having value", x)

# Call the function round with input x
# Then, save output of function call in variable roundedXInt
roundedXInt = round(x)
print("x rounded to the nearest int:", roundedXInt)

roundedXTenth = round(x, 1)
print("x rounded to the nearest tenth:", roundedXTenth)

a = round(x, 2)
print("x rounded to the nearest hundredth:", a)
# demonstrating that the name doesn't matter,
# but good names make the code easier to understand

roundx = round(x, 3)
print("x rounded to the nearest thousandth:", roundx)

print(round(x, 4))

print("-"*40)
print("x is of", type(x))

# Example of importing a module
# by Sara Sprenkle

# Alternative: could use import math
# Would then need to prepend all constants and functions with math.
from math import *

i = 1j

# The equation e^(i pi) + 1 = 0

# with import math statement
# shouldbezero =  math.e ** (i * math.pi) + 1

shouldbezero =  e ** (i * pi) + 1

print("e^(i pi) + 1 equals", shouldbezero)

# practice using functions from modules
print("100^(1/2) =", sqrt(100))

# Display the numbers that are selected by the magic 
# ping-pong ball machine for Pick4 VA Lottery, all on one line
# By CS111

# Examples calling the print function
# Sara Sprenkle for CSCI111

print("Hi", "there", "class", sep='; ')
# By default end is "\n" --> called "the new line character"
# means, put the next displayed text on the next line.
print("Put on same", end='')
print("line")

# make end=" " (a space) instead:
print("Put on same", end=' ')
print("line")

something = 7

print("The result is ", something, ".", sep = "")

# Demonstrating random module
# by Sara Sprenkle

import random

NUM_RANDOM = 10
print("This program generates", NUM_RANDOM, "random numbers.")

# Demonstrates that it's a pseudo-random number generator
# If using the same seed, the program generates the same list of
# "random" numbers.

# The following function call sets the seed.
#random.seed(1)

for x in range(NUM_RANDOM):
    print(random.random())
    #print(random.randint( 0, 10))

# This program adds up fixed number of inputs from the user.
# By CS111

NUM_INPUTS = 3

print("This program will add up", NUM_INPUTS, "numbers given by the user.")
print()

sum = 0

for i in range(NUM_INPUTS):
    number = eval(input("Enter your number: "))
    sum += number
    # same as saying: sum = sum + number

print()
print("The sum of these", NUM_INPUTS, "numbers is", sum)

# Representative of the way to implement sum5.py before today's lecture.
# What happens if I asked you to add up 15 numbers... 
# Or 100 numbers intead?  What would writing that code be like?

print("This program will total 5 numbers entered by you!")

num1 = input("Enter the first number: ")
num2 = input("Enter the second number: ")
num3 = input("Enter the third number: ")
num4 = input("Enter the fourth number: ")
num5 = input("Enter the fifth number: ")

total = num1 + num2 + num3 + num4 + num5
print("The total of these numbers is", total)

# This program adds up 5 numbers from the user.
# By CS111

print("This program will add up 5 numbers given by the user.")
print()

sum = 0

for i in range(5):
    number = eval(input("Enter your number: "))
    sum += number

print()
print("The sum of these 5 numbers is", sum)