structure type and variable name

Question

hi all i just wanted to know whether we can declare variable name as structure name.

for example

typedef struct
{
  char c;
}t;

then in some function can i use

fun()
{
  t t;
}

is this valid? if so then how compiler differentiate between them?

Answer 1

Yes, it is valid. If you do that, then the structure type is hidden in the enclosing scope and t refers only to the declared variable.

Answer 2

Yes, but why would you want to? If you want bugs and errors to thrive in your project, then go right ahead and name variables after types.