Nested If Else Statement

Question

https://code.sololearn.com/c3OkUXA9wlxJ/?ref=app
When I change int value to 0 in this code the else statement print Error and when I change it like 1 2 4 34 any number it says too young. I know about this topic but please help me how error statement shows as output when I set INT vakue to 0.

Answer 1

if age > 0 stuff displays, else there is an error. 0 > 0 is false, so the else executes

Answer 2

but why not too young else statement execute why the last else statement execute?