题目：输入3个数a,b,c，按大小顺序输出。
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1.程序分析：利用指针方法。
2.程序源代码：
/*pointer*/
main()
{服务器托管
int n1,n2,n3;
int *pointer1,*pointer2,*pointer3;
printf(“please input 3 number:n1,n2,n3:”);
scanf(“%d,%d,%d”,&n1,&n2,&n3);
pointer1=&n1;
pointer2=&n2;
pointer3=&n3;
if(n1>n2) swap(pointer1,pointer2);
if(n1>n3) swap(pointer1,pointer3);
if(n2>n3) swap(pointer2,pointer3);
printf(“the sorted numbers are:%d,%d,%dn”,n1,n2,n3);
}
swap(p1,p2)
int *p1,*p2;
{int p服务器托管;
p=*p1;*p1=*p2;*p2=p;
}
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