这是一个求树的高度的题
 其中xiaosanjiaobili 得出的结果老是是零
 导致shudegaodu的结果不准确
 为什么？


#include <stdio.h>
int main (void)
{

    long Ayandegaodu =0L;
    long Bdegaodu = 0L;
    long A_Bdejuli = 0L;
    long B_SHUdejuli = 0L;
    float shudegaodu =0.0f;
    long A_SHUdejuli=0;
    long xiaoBgaodu =0;
    float xiaosanjiaobizhi = 0.0f;
    float xiaoshudegaodu= 0.0f;



    printf("请输入A到眼睛的高度\n");
        scanf("%ld",&Ayandegaodu);
    printf("请输入B的高度\n");
        scanf("%ld",&Bdegaodu);
   

    printf("请输入A到B得距离\n");
        scanf("%ld",&A_Bdejuli);
    printf("请输入B到树的距离\n");
        scanf("%ld",&B_SHUdejuli);

    xiaoBgaodu =( Bdegaodu - Ayandegaodu;
    xiaosanjiaobizhi =xiaoBgaodu / A_Bdejuli;
    A_SHUdejuli=A_Bdejuli + B_SHUdejuli;
   
    xiaoshudegaodu=xiaosanjiaobizhi * A_SHUdejuli;
    shudegaodu= (xiaoshudegaodu + Ayandegaodu;



   
    printf("树的高度为 %ld", Ayandegaodu);


    return 0;

}