print("\nThis program demonstrate nest if\n")
print("Insure both values > 0, preferred method")

data1 = 7
data2 = 3

print(f"data1 = {data1}, data2 = {data2}")

if data1 <= 0 or data2 <=0:
    print("ERROR: data1 and data2 must greater than zero")
    exit()



print("Done")