P4B Quiz (13)：條件判斷式 – if 相關敘述及使用

number = 5
if number > 0:
    print('Positive number')
print('Simple Learn')

number = -5
if number > 0:
    print('Positive number')
else:
    print('Negative number')
    print('Simple Learn')

number = -5
if (number <= 0):
    if number == 0:
        print('Number is 0')
    else:
        print('Number is negative')
else:
    print('Number is positive')

if 20 < 30:
    print("Simple")
    print("Learn")
print("is great") 

a = 33
b = 100
if b > a:
print("b 比 a 大")
print("a 比 b 大") 

a = 11
b = 11
if b > a:
    print("b 比 a 大")
elif a == b:
    print("a 和 b 相等") 

a = 33
b = 33
if b >= a:
    print("b 比 a 大")
elif a == b:
    print("a 和 b 相等")
else:
    print("a 比 b 大")

if 51 < 5:
    print("Simple")
elif 0 < 5:
    print("Learn")
elif 0 < 3:
    print("is")
else:
    print("great")

num = 33
if num == 0:
    print(num, "is Green")
elif num % 2 == 0:
    print(num, "is Yellow")
else:
    print(num, "is Blue")

mark = 82
if mark >= 60 and mark <= 100:
    if mark >= 90:
        print("You are the best!")
    elif mark >= 80:
        print("Well done!")
    elif mark >= 70:
        print("You can do better.")
    else:
        print("Pass.")
elif mark > 100:
    print("This mark is too high.")
elif mark < 0:
    print("This mark is too low.")
else:
    print("Failed.")