输入身高体重，求体脂率
源代码如下

#include <stdio.h>
int main()

{
float height,weight,index;
printf("请输入身高(m)，体重(kg):\n");
scanf("%f%f",&height,&weight);
index=weight/(height*height);
printf("体重指数为：%.2f\n",index);
return 0;

}