41 lines
620 B
C
41 lines
620 B
C
|
/* $Id: recursion.c,v 1.2 2005/04/04 11:34:58 csg Exp $ */
|
||
|
|
|
||
|
|
/* Generate an example of recursive code, to see *
|
||
|
|
* how it can be modeled in the scope graph. */
|
||
|
|
|
||
|
|
/* self-recursion */
|
||
|
|
int fib(int i)
|
||
|
|
{
|
||
|
|
if(i==0)
|
||
|
|
return 1;
|
||
|
|
if(i==1)
|
||
|
|
return 1;
|
||
|
|
return fib(i-1) + fib(i-2);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* mutual recursion */
|
||
|
|
int anka(int);
|
||
|
|
|
||
|
|
int kalle(int i)
|
||
|
|
{
|
||
|
|
if(i<=0)
|
||
|
|
return 0;
|
||
|
|
else
|
||
|
|
return anka(i-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
int anka(int i)
|
||
|
|
{
|
||
|
|
if(i<=0)
|
||
|
|
return 1;
|
||
|
|
else
|
||
|
|
return kalle(i-1);
|
||
|
|
}
|
||
|
|
|
||
|
|
extern volatile int In;
|
||
|
|
|
||
|
|
void main(void)
|
||
|
|
{
|
||
|
|
In = fib(10);
|
||
|
|
}
|