script to indent code

Hi,

I'm looking for a script which does the indentation as below for a C code
Ex:

void(int *q, int* p)
{
int x,y,z;
float *f;
if(q!=NULL)
q=q->next;
}

to:

void (int * q, int * p)
{
int x, y, z;
float * f;
if (q != NULL)
q = q->next;
}

If you can see the change, I have added spaces between braces, commas
and added proper alignment.

I'm looking for a script to perform as above. Can any one please let
me know whether there are any existing scripts or commands to do this.

Thanks in advance.

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