سورس کد جابجایی دو متغیر

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ldquo;>#include 
#include 
int main()
{
 int x, y;
 printf("n Enter two number:");
 scanf("%d%d", amp;x, amp;y);
 printf("n before change:x=%d, y=%d", x, y);
 x += y;
 y = x - y;
 x -= y;
 printf("n after change:x=%d, y=%d", x, y);
 getch();
 return 0;