想要求重量与价格的关系但出错

问题：重量小于一大于零时统一为10块钱，重量大于1时，砍去一开始的一公斤。每公斤6块钱，有小数的取整进一。编译可以通过但是输数字的环节出了问题，跳出来为乱码啥的。
代码：

     
    #include
int main(void)
{
/Begin/
int weight1,a;
float weight;
scanf("%f",weight);
if(weight<=1 && weight>0)
a=10;
printf("Price: %.2f",a);
if(weight>1)
weight1=(int)weight;
a=weight1*10+10;
printf("Price: %.2f",a);

  /*********End**********/ 
}#include
int main(void)
{  
  /*********Begin*********/
  int weight1,a;
  float weight;
  scanf("%f",weight);
  if(weight<=1 && weight>0)
  a=10;
  printf("Price: %.2f",a);
  if(weight>1)
  weight1=(int)weight;
  a=weight1*6+10;
  printf("Price: %.2f",a);

  /*********End**********/ 
}


/**问题：重量小于一大于零时统一为10块钱，重量大于1时，砍去一开始的一公斤。
 * 每公斤6块钱，有小数的取整进一*/
#include<stdio.h>
int main(){

  /*********Begin*********/
  int weight1=0;
  float weight,a;
  printf("请输入重量：\n");
  scanf("%f",&weight);

  if(weight<=1 && weight>0)
  { 
    a=10;
  printf("Price: %.2f",a);
  }
  else 
  {
  weight1=weight/1;
  a=weight1*6+10;
  printf("Price: %.2f",a);
  }
 /*********End**********/

}

scanf("%f",weight);
改为
scanf("%f",&weight);

#include<stdio.h>
int main(void)
{  
  int weight1;
  float weight,a;
  scanf("%f",&weight);
  if(weight<=1 && weight>0)
  {
      a=10;
      printf("Price: %.2f",a);
  }
  else if(weight > 1)
  {
  weight1=(int)weight;
  if(weight - weight1 > 0)
     weight1++;
  a=10 + (weight1-1)*6;
  printf("Price: %.2f",a);
}
}