Question is from functions

Question

Can we declare a variable in main() which we will be using in another function? And why?

Comments

What I know is yes

but yeah  I just run this code...and got error

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@magma

Can you check the code by removing void in function return type or replace ' &a' with a int variable? I still can not figure out what is the meaning of &a argument

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you may use like

void main ()

{

int a = 12;

 Magma(&a);

}

void Magma (int *p)

{

(*p)++;  // *p means a

}