April 01, 2004
Building Little Languages with Macros
(a)
#define swap(x,y) {int tmp=y; y=x; x=tmp;}
(b)
swap(c.red, d->blue)
(c)
{ int tmp=d->blue; d->blue=c.red; c.red=tmp; }
(d)
swap(tmp, other)
(e)
{ int tmp=other; other=tmp; tmp=tmp; }
Example 1: swap.
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