C程序：一球从100米下落每次落地后返回原高度的一半落下求它在第十次落地时共经历几米、第十次反弹多高

#include <stdio.h>

#define N 10

int main()
{
double dHeight = 100;
double dSum = 0;
for(int i = 0; i < N; ++i)
{
dSum += i == 0 ? dHeight : 2 * dHeight;
dHeight /= 2;
}
printf("第%d次落地时经过了%lf米\n", N, dSum);
printf("第%d次落地后可反弹%lf米.", N, dHeight);
}

main(){
int s=100,n=2,i=100;
while(n<=1){
s=s+i/2*2;
i=i/2;
n++;
}
printf("%d",s);
}

#include <stdio.h>
void main()
{
int n=10,i;
double height=100,sum=0;
sum=sum+100;
for(i=1;i<n;i++)
{
sum=sum+height;
height=height/2;
}
printf("第10次落地共经过了%f米\n",sum);
printf("第10次反弹高度为%f米\n",height/2);
}