S1E16：拾遗 | 课后测试题及答案

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MIKU神仙教主

haocstudy

浪子大鲨鱼

小甲鱼！永远嘀神

找规律多实践

数兔子
int rabbit = 2, mature = 2, infant = 0, infant_1 = 0; // infant代表刚出生的兔子，infant_1代表1个月的兔子
    for (int i = 0; i < 24; i++) {
        int temp_rabbit = rabbit, temp_mature = mature, temp_infant = infant, temp_infant_1 = infant_1;
        temp_rabbit += mature / 2 * 2;
        temp_mature += infant_1;
        temp_infant = mature / 2 * 2;
        temp_infant_1 = infant;
        rabbit = temp_rabbit;
        mature = temp_mature;
        infant = temp_infant;
        infant_1 = temp_infant_1;
    }
    printf("2年后一共有兔子%d只\n", rabbit);

Retr0

#include <stdio.h>

int main(){
    long int n = 1,n0 = 0,n1 = 0,i,temp;
    for(i = 0;i <= 24;i++){
        temp = n;
        n += n1;
        n1 = n0;
        n0 = temp;
    }
    printf("%ld\n",n);
    return 0;
}

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mahuateng

asssssssssssssssssssssssssssssssssssssssssssssssssssss

money0000

兔子

haocstudy

兔子的题 没想明白

fresh_python

0.10个A
1.10个B
2.a,b,c
3.a = 11,b = 5,c = 9
4.z = x>0 ? x:-x
5.

if(size>12)
{
const = const * 1.05;
flag = 2;

}
else
{
bill = cost * flag;
}

if(ibex>14)
{
sheds = 3;
help = 2 * sheds;
}
else
{
sheds = 2;
help = 2*sheds;
}

do
{
scanf("%d",&score);
if(score<0)
{
printf("count = %d\n",count);
}
else
{
count++;
scanf("%d",&score);
}
}while(score<0);

动动手
0.

#include<stdio.h>

int main()
{
        float money1 = 10000.0,money2 = 10000.0,jiayu,heiye;
        float rate1 = 0.1,rate2  = 0.05;
        int year = 0;
        jiayu = money1;
        heiye = money2;
        do
        {
                jiayu = jiayu + money1 * rate1;
                heiye = heiye + heiye * rate2;
                year++; 
        }while(heiye<=jiayu);
        
        printf("%d年后，黑夜的投资超过小甲鱼！\n",year);
        printf("小甲鱼的投资额是：%.2f\n",jiayu);
        printf("黑夜的投资额是：%.2f\n",heiye);
        return 0;
 } 

1.

#include<stdio.h>

int main()
{
        float all = 4000000.0;
        float rate = 0.08;
        float spending = 500000.0;
        int year = 0;
        do
        {
                all = all - spending;
                all = all + all*rate;
                
                year++;
                
        }while(all>0);
        
        printf("%d年之后，小甲鱼败光了所有的家产，再次回到一贫如洗......\n",year);
        
        return 0;
}

2.

#include <stdio.h>

int main()
{
        int i = 1,j;
        float x,sum = 0;
        for(j = 1; 1.0/j>pow(10,-6);j = j + 2)
        {
                sum = sum + i*(1.0/j);
                i = -i;
        }
        x = sum * 4;
        
        printf("圆周率为：%.7f\n",x);
        
        return 0;
}

3.

#include<stdio.h>

int main()
{
        int rubbits = 2;
        int i;
        int year = 2;
        
        for(i = 0;i <= year*12; i = i+2)
        {
                rubbits *= 2;
         } 
         
        printf("%d年后，可以繁殖%d对兔子！\n",year,rubbits/2-1);
        
        return 0;
 } 

龍先生爱C++

好难

文锦~湫

0.该程序不会被执行，j没有初始化，10个；
1.0个；
2.a；
3.a=8,b=4,c=4；
4.-x<0?z=x:z=-x;
5.A if(size>12)
    {

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