[Solved] Why It showing Hello two times try in on Turbo C v 3.0 [closed]

Question

This is a well-known bug in the Turbo C 3.0 compiler.

But note one thing: currently the behaviour of your function is undefined as main should always have an int return type. Formally, a standards compliant compiler is permitted to do anything with your program!

If you adjust your program so it has no undefined constructs then, on a standard compliant compiler, it will be guaranteed to output “hello” exactly once.

Accepted Answer

This is a well-known bug in the Turbo C 3.0 compiler.

But note one thing: currently the behaviour of your function is undefined as main should always have an int return type. Formally, a standards compliant compiler is permitted to do anything with your program!

If you adjust your program so it has no undefined constructs then, on a standard compliant compiler, it will be guaranteed to output “hello” exactly once.