### Ch 7 If/else

# Understand what's going on in the functions below
# i.e. be careful and precise when you write code :)!
# (or, in other words, don't write code like in the first two)      
        
def testyes1(input):
    if (input == 'Si' or 'si' or 'SI'):
        print('Yes :)')
    else:
        print('No :(')

def testyes2(input):
    if (input == ('Si' or 'si' or 'SI')):
        print('Yes :)')
    else:
        print('No :(')

def testyes3(input):
    if ((input == 'Si') or (input == 'si') or (input == 'SI')):
        print('Yes :)')
    else:
        print('No :(')

    
### Ch 6 Functions
        
def foo(a, b, c):
    print("a: {}, b: {}, c{}".format(a,b,c))
    temp = a * b
    result = temp + c
    return result


# print vs return
# Understand the differences between these three functions!

def add1a(number):
    result = number + 1
    return(result)

def add1b(number):
    result = number + 1
    print(result)
    return

def add1c(number):
    result = number + 1
    print(result)
    return(result)


###
### Useful for HW1: string format is super convenient for nice printing once
### you learn how to use it.

def formatEx1():
    item = "bicycle"
    itemCost = 127.123124
    outputString = "The {}’s cost is S{:.2f}.".format(item, itemCost)
    print(outputString)
    outputString = f"The {item}’s cost is ${itemCost:.3f}."
    print(outputString)
    
# try, e.g. formatEx2(1, 2.34567, 3.98765)
def formatEx2(a, b, c):
    d = a + 1
    e = 0
    print("a: {}, b: {:.2f}, c:{:.3f}, d:{}, e:{}".format(a, b, c, d, e))
    e = (23 * b) + (a / d) - 4
    print("a: {}, b: {:.3f}, c:{:.1f}, d:{}, e:{}".format(a, b, c, d, e))
    return e




# simple example of a test function
#
# supposed to subtract 1 but incorrect
def sub1(num):
    return(5)

def testSub1():
    testResult = sub1(6)
    print("Test1: sub1(6) yields {} ... {}".format(testResult, "CORRECT" if testResult == 5 else "INCORRECT"))
    testResult = sub1(10)
    print("Test2: sub1(10) yields {} ... {}".format(testResult, "CORRECT" if testResult == 9 else "INCORRECT"))

def testSub1v2():
    testResult = sub1(6)
    testResult = sub1(10)