def sgn(x):
try:
if x > 0:
return 1
elif x < 0:
return -1
else:
return 0
except TypeError:
print("Error: Input must be a numeric value")
except Exception as e:
print("An error occurred:", e)
# Test the sgn function with some values
print(sgn(5)) # Output: 1
print(sgn(-3)) # Output: -1
print(sgn(0)) # Output: 0
print(sgn('a')) # Output: Error: Input must be a numeric value
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