ใช้ If-Elif-Else
num = float(input("Enter a number: "))
if num > 0:
print("Positive")
elif num == 0:
print("Zero")
else:
print("Negative")
ใช้ Nested If
num = float(input("Enter a number: "))
if num >= 0:
if num == 0:
print("Zero")
else:
print("Positive")
else:
print("Negative")