Introduction
Hey, I've heard about "control flow" in programming. What is it?
Control flow refers to the order in which statements are executed in a program. It can be altered using loops and conditional statements.
Interesting! Can you teach me how to use control flow?
Sure! Let's start with conditional statements.
Conditional Statements
How do we use conditional statements?
Conditional statements allow you to execute different parts of the code based on whether a condition is true or false. The most common conditional statement is the "if" statement.
x = 10
if x > 5:
print("x is greater than 5")
Output:
x is greater than 5
What if we want to check for multiple conditions?
You can use "elif" (short for "else if") and "else" statements to check for multiple conditions.
x = 10
if x > 15:
print("x is greater than 15")
elif x > 5:
print("x is between 6 and 15")
else:
print("x is 5 or less")
Output:
x is between 6 and 15
Loops
Now, tell me about loops! They're like repeating stuff, right?
Yes! Loops are used to execute a block of code multiple times. There are two main types of loops: "for" loops and "while" loops.
For Loops
Show me how to use a "for" loop!
A "for" loop is used to iterate over a sequence, like a list or a range of numbers. Here's an example:
for i in range(5):
print(i)
Output:
0
1
2
3
4
While Loops
How about a "while" loop?
A "while" loop keeps executing a block of code as long as a certain condition is true.
counter = 0
while counter < 5:
print(counter)
counter += 1
Output:
0
1
2
3
4
Conclusion
You’ve learned the basics of control flow in programming! By using conditional statements and loops, you can create more dynamic and efficient programs. Keep practicing, and you’ll become a control flow expert in no time! 🎉