/* Note:Your choice is C IDE */
#include "stdio.h"
void change(int *pa,int *pb)
{
int *pc;
pc=pa;pa=pb;pb=pc;
printf("%d%d",*pa,*pb);
}
void main()
int a,b,*pa,*pb;
scanf("%d,%d",&a,&b);
pa=&a;pb=&b;
change(pa,pb);
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