例将数从大到小输出 swap(int *pl, int *p2) i int p (main) 2000 ·整型变量a p-p 1一* 2002 整型变量b p 2: 2004 指针 pointer1 pz-p 2000 2006 干指针 pointer 2 2002 ma 2008 i int a, b COPY 200 (swap) 指针pl 2000 pointer I, pointer 2 200C 指针p2 scanf("%d, %d", &a, &b); 2002 POOR 整型p pointer_ 1=&a; pointer_2=&b: 2010 5 if(a<b)swap(pointer 1, pointer 2) printf("n%d, %dn", a, b)swap(int *p1, int *p2) { int p; p=*p1; *p1=*p2; *p2=p; } main() { int a,b; int *pointer_1,*pointer_2; scanf("%d,%d",&a,&b); pointer_1=&a; pointer_2=&b; if(a<b)swap(pointer_1,pointer_2); printf("\n%d,%d\n",a,b); } …... 2000 2008 200A 2002 2004 2006 200C 200E 2010 ... 5 9 整型变量a 整型变量b (main) 指针pointer_1 指针pointer_2 2000 2002 (swap) 指针p1 指针p2 整型p 5 9 2000 2002 COPY 5 例 将数从大到小输出