51 lines
762 B
C
51 lines
762 B
C
extern int printf (const char *,...);
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struct s { struct s *n; } *p;
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struct s ss;
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#define MAX 10
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struct s sss[MAX];
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int count = 0;
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void sub( struct s *p, struct s **pp );
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int look( struct s *p, struct s **pp );
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main()
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{
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struct s *pp;
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struct s *next;
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int i;
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p = &ss;
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next = p;
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for ( i = 0; i < MAX; i++ ) {
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next->n = &sss[i];
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next = next->n;
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}
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next->n = 0;
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sub( p, &pp );
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if (count != MAX+2)
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abort ();
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exit( 0 );
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}
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void sub( struct s *p, struct s **pp )
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{
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for ( ; look( p, pp ); ) {
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if ( p )
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p = p->n;
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else
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break;
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}
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}
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int look( struct s *p, struct s **pp )
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{
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for ( ; p; p = p->n )
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;
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*pp = p;
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count++;
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return( 1 );
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}
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