指针1

main(){
 int a,b,c,*pmax,*pmin;
 printf("input three numbers:\n");
 scanf("%d%d%d",&a,&b,&c);
 if(a>b){
 pmax=&a;
 pmin=&b;}
 else{
 pmax=&b;
 pmin=&a;}
 if(c>*pmax) pmax=&c;
 if(c<*pmin) pmin=&c;
 printf("max=%d\nmin=%d\n",*pmax,*pmin);
 }