# -*- coding: utf-8 -*-
"""
Created on Mon Oct  3 10:59:41 2022

@author: cpresser
"""

#list
list1 = [2, 5, 7]

#tuples
tuple1 = (3, 6, 8)
tuple2 = 9, 0, 2
tuple1 = (7, 9, 10)

list1[0] = 1
#tuple1[0] = 0

print(list1[0])
print(tuple1[0])

#functions
# call the function len
#use its result and call the function print
print(len(list1))
list1.append(50) #method (function)


#define our own functions

# len(list1)
#  uses information: list1  argument or parameter

# f(x) = 3*x
# x: argument
# f(5)= 3*5 = 15

#define a function
def f(x):       # function header: x is the argument
                # x is defined within the function
    return 4*x  # return statement

#call the function f with the argument 5
# print its return value
print(f(5))
print(f(7))

for i in range(5):
    v = f(i)
    print(f"{i:5}{v:5}")
    
#print(x)

def speed(dist, time):
    s = dist/time
    return s

print(speed(200, 4))

#assign the return value to a variable
mySpeed = speed(200, 4) #200 becomes dist, 4 becomes time
print(mySpeed)


print(speed(4, 200)) #dist is 4, time is 200

#explicitly assign values to the parameters
print(speed(time=4, dist=200), end=":)")


def stars (n):
    result = ""
    i = 0
    while i < n:
        #result = result + "*"
        result += "*"
        #i = i + 1
        i += 1  #same as i = i + 1
    return result

def forStars (n):
    result = ""
    for i in range(n):
        result += "*"
    return result

print(stars(10))
print(stars(30))
print(forStars(10))
print(forStars(30))