CSIT 111 Study 5/06/2025

# printing output
print("Message to the user")
# variables
job = "fisherman"
print(job)
job = "software developer"
number = 1
print(number)
# concatenataion
print(job + " " + str(number))
number += 5
print(number * 50)

# input from user
age = int(input("What is your age?\n"))
print(age)
# conditions
print(age >= 18)
# branching/decisions/ "if statements"
if age >= 21:
        print("You can drink")
elif age >= 25:
        print("this is unreachable because 21 > 25")
else:
        print("you can't drink")
# loops (for/while)
# keep adding to a total until user quits
user_input = input("Enter a number or q to quit:\n")
total = 0
while user_input != "q":
        total = total + int(user_input)
        print(total)
        user_input = input("Enter another number or q to quit:\n")

name_of_student = "Josh"
print("Length of Josh = " + str(len(name_of_student)))
# range function (start/stop/step)
#we go up to but not including the stop
# 1 parameter = the stop
# J - O - S -H
for i in range(len(name_of_student)):
        print(name_of_student[i])

# H - S - O - J

# 3 parameters = start and stop and step
for i in range(len(name_of_student) - 1, -1, -1):
        print(name_of_student[i])
# H - S - O - J
# 2 parameters = start and stop
for i in range(0, len(name_of_student)):
        # 4- 1 - 0 = = 3 = H
        # 4- 1 - 1 = 2 = S
        # 4- 1 - 1 = 1 = O
        # 4- 1 - 1 = 0 = J
        print(name_of_student[len(name_of_student) - 1 -i])

# functions/methods/procedures/subprograms/subroutines/modules

# input/output or even just named with no input or output

# data validation

# arrays/lists
colors = ["blue", "red", "green", "purple", "yellow"]
for color in colors:
        print(color)

def valid_color(my_color):
        for color in colors:
                if my_color == color:
                        return True
        # if not found
        return False
print(valid_color("fruit")) #False
print(valid_color("blue")) #True

# file manipulation