The program is an illustration of the if conditional statement.
Conditional statements are statements whose execution is dependent on its truth value.
The program in Python where comments are used to explain each line is as follows:
#This gets input for the number
number = int(input("Enter a number: "))
#This checks for negative numbers
if number < 0:
print("Negative!")
#This checks for positive numbers
elif number > 0:
print("Positive!")
#Otherwise, the number is zero
else:
print("Zero!")
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