The ball falls freely from a given height, rebounds to half of its original height after hitting the ground, falls again, rebounds again, and so on. Asked nhow much distance did the ball travel in the air for the first time it lands? nWhat is the height of the first rebound?
Input format:
Input two non-negative integers in one line, which are the initial height of the ball and the sum n, both of which are within the range of long integers.
Output format:
In a row, output the distance that the ball passes in the air for the nth landing and nthe height of the bounce for the first time, separated by a space and one decimal place. The title guarantees that the calculation result does not exceed the double precision range.
Input sample:
33 5
Sample output:
94.9 1.0
Code:
# include <stdio.h>
# include <stdlib.h>
int main() {
int i = 1;
double height,n;
scanf("%lf %lf",&height,&n);
double km = height,km_n;
if (n == 0) {
printf("%.1lf %.1lf",0,0);
}else {
while(i < n) {
height *= 0.5;
km += (height * 2.0);
i += 1;
}
km_n = height * 0.5;
printf("%.1lf %.1lf",km,km_n);
}
return 0;
}
Submit screenshot:
Problem-solving ideas:
n=0Judgment when paying attention !