If Statements

If statements can be used to evalute an expression. Example of checking if a variable called number is positive:
```if number > 0:
print(f"{number} is positive")
```
Make sure to indent each line in the body of the if statement. Let's also print something if the number is negative. To do that, add an `elif` statement, which is short for else if:
```if number > 0:
print(f"{number} is positive")
elif number < 0:
print(f"{number} is negative")
```
The elif statement runs only if the previous if statement is false. Let's also print something if the number is 0. To do that, add an `else` statement:
```if number > 0:
print(f"{number} is positive")
elif number < 0:
print(f"{number} is negative")
else:
print("0 is not positive or negative")
```
A few notes about if statements:
• An if statement must start with the `if` keyword, and there can be one only
• You can have as many `elif` statements as you want after an if statement
• There can be one `else` statement only, and it must be at the very end of the if and elif statements

Exercise 1 of 4

Write the following as an if statement: If age is greater than 30, print "Hello sir". Use two spaces to indent.

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Exercise 2 of 4

Write the following as an if statement: If total is less than or equal to 12.5, print "Too low".

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Exercise 3 of 4

Write the following as an if statement: If name is equal to "Lizz", print "Hello Lizz". Otherwise, print "I don't know you".

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Exercise 4 of 4

Write the following as an if statement: If x is equal to 0, print "zero". But if x is greater than 0, print "positive". Otherwise, print "negative".

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