#include<stdio.h>
void main()
{
float a,b,c;
printf("please input two number!\n");
scanf("%f %f",&a,&b);
if (a>b)
{
c=a;
a=b;
b=a;
}
printf("The max number is %f\n",&a);
printf("The min number is %f\n",&b);
}
有图有真相

printf("The max number is %f\n",&a);

#include<stdio.h>
void main()
{
float a,b,c;
printf("please input two number!\n");
scanf("%f %f",&a,&b);
if (a<b)
{
  c=a;
  a=b;
  b=c;
}
printf("The max number is %5.2f\n",a);
printf("The min number is %5.2f\n",b);
}

if里面的条件反了
printf 里面是&a &b 这两个是地址 而不是a b所代表的数字

[ 本帖最后由 nixk 于 2014-9-13 11:18 编辑 ]

#include<stdio.h>
void main()
{
float a,b,c;
printf("please input two number!\n");
scanf("%f %f",&a,&b);
if (a<b)
{
  a=a+b;
  b=a-b;
  a=a-b;
}
printf("The max number is %5.2f\n",a);
printf("The min number is %5.2f\n",b);
}

谢谢，我知道了，