Question

Is there any difference b/w local variable and automatic variable?

Comments

Local is a scope while Automatic is a storage class. A local variable can have a storage class (static, auto, register). Default storage class, in C language for local variables is auto. So both are same

Answer 1

There is strictly no difference. { auto int a; /* ... */ } and { int a; /* ... */ } are equivalent. The common practice is not to put the auto specifier.