定义一个可除变量，但打印出0.00

Question

//when I am trying to make a division in a float variable for some reason it
//prints 000

#include <stdio.h>
#include <math.h>

int main(){
  float price , discount  , total ;

  scanf ("%f",&price);

  if (price > 99 && price < 201)  
    discount = 10/100;   
    // i can also set <<discount>> variable 0.10  
  else if (price < 301)    
    // but i can t understand why this way prints 00  
    discount = 10/100;
  else if (price <401)  
    discount = 20/100;  
  else  
    discount = 30/100;

  total = price - discount;
  printf ("tha exete ekptwsei %.2f",discount);
}

Answer 1

if (price > 99 && price < 301)
    discount = 10.0/100.0;   
else if (price <401)  
    discount = 20.0/100.0;   
else  
    discount = 30.0/100.0;

更新 除法器中只有.0就可以满足10 / 100.0