Notes on writing questions in C language -- monkeys eat peaches

subject

A ball from 100 Free fall at meter height , Jump back to half of the original height after landing ; And then fall , Ask it in the 10 The next landing , How many meters in total ？ The first 10 How high is the rebound ？

Ideas

Adopt the method of converse thinking , Infer from back to front with loop statements .

Answer key

#include <stdio.h>

int main()
{
    
    int day,x1,x2;

    day=9;
    x2=1;

    while(day>0)
    {
    
        x1=(x2+1)*2;    // The number of peaches on the first day was  2  The number of peaches in the sky  1  After  2  times 
        x2=x1;
        day--;
    }

    printf(" On the first day, I picked %d A peach .\n",x1);
}

Sample output