2-23 Lab Exercise 2: How many rabbits?

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    Suppose there is a pair of newborn bunnies in the pasture in the first month, each pair of male and female bunnies grew into a large male and female rabbits after two months later. After three months from the start, each pair of male and female rabbit can give birth to a pair of small bunnies every month. If the rabbits can live forever, how many pair of rabbits in the pasture in the first N month?

(1<=N<=90)(Very IMPORTANT)

Input

3

Output

2

 

Input

5

Output

5

 

Input

88

Output

1100087778366101931

[Exercise] Coding (C) - asked in C
ID: 22018 - Available when: Unlimited - Due to: Unlimited
edited by | 4.1k views

69 Answers

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Hidden content!
#include <stdio.h>







long long int rabbit(int n)



{


*** **** * * * ** * ** * ** long int value1, value2, value3;


** * **** ** *** * count = 1;


****** * * * ***** ** *** * = 0;


* * ** *** ** * * *** * * ** = 1;


*** * **** *** ** **** * ** * (n == 2)


** * ** *** *** * * * **** * ** ** *** 1;


* **** * ***** ******** * * * if (n == 1)


* * * * ** * * * *** *** ** * * ******* 1;


* *** * ***** ** ** **


** * * ** **** * ** * *** *** ****** * ** **** (count < n)


* * * *** * **** *** *** * * **** * * ***


** ** ****** ** *** * *** ** * * * *** ** *** ** * ******* **** ** * * * * = value1 + value2;


* ** *** * * ** *** ** * ***** * ****** * * *** *** * * ***** * * ***


*** ***** * * * * * ** ** ** *** ** ** * ** * = value2;


********** *** *** **** ** * * * * ** ** ** * * * ** *** * = value3;


* ** * ** *** ** * ****** * * **** * * * * **


* ** * * * ** **** * * * *** ** * ****** * *** **** * value3;



}



int main()



{


* * *** * ** * *** num;


** * * ** ** * * * ** * ** ** *** * &num);


* * ****** *** *** * ** * ** * * ** rabbit(num));


* ** ** ** *** ***** 0;



}
answered by (6 points)
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Hidden content!
#include <stdio.h>







long long int rabbit(int n)



{


** * *** * * * ***** * long int value1, value2, value3;


* * ** * * * *** * ** count = 1;


* * * * *** ** * ** * = 0;


** * * *** * ** ** * * = 1;


* * * * ****** * * * * (n == 2)


* * *** * ** ** * **** **** * * ****** 1;


* *** * **** ** *** * * if (n == 1)


** * *** * *** ** * * * * * * * * ** * ** * *** 1;


* * ***** * * * ****


** * * ** ** *** * *** *** ** *** *** * (count < n)


** ** ** ** * **** ** ** ** *** * * ***


**** * * ***** ** *** * ** * * *** * * ** * * * * ** ****** = value1 + value2;


* * ** * ** * **** *** * * ** * *** * ** * **** * * * * * * *


* ** * *** * * * * * *** **** ***** *** * * * ****** * * ** ** * * *** = value2;


* * * * **** **** * * * * * ** ** * ** * *** * *** * **** ** ** ** * = value3;


* ******* * ** * **** * * *** ** *** **


*** * * * * * * ** ** * * * * * * ** *** * ** * value3;



}



int main()



{


** ** * *** * * *** * num;


** * ** **** *** ** ****** **** &num);


*** ****** *** * * ** * **** rabbit(num));


* *** ** * ** * * 0;



}
answered by (-298 points)
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Hidden content!
#include <stdio.h>



long long int rabbit(int n)

{
****** ** * * * * *** long int value1, value2, value3;
*** * ** * * * *** *** count = 1;
** *** * * * * ** **** * = 0;
** **** **** ***** * ***** = 1;

    if (n == 2)
* * *** ** * * * *** * * ** ***** ** 1;
** * ** * * * * * * * if (n == 1)
** * * ** *** * ** ********* ***** * * **** * 1;
* ***** ** * * * **
* * ** ********** * * ** ** * * ** * * (count < n)
* **** * * ** * * ** ****** ** * * * * *
* * ******* *** **** * *** ** * *** * * **** **** *** * **** * = value1 + value2;
********* *** * *** * * *** * * * * * **** * *** * * * ** ** * ***
* ******* *** **** ***** **** **** ** * * * ** * ** *** ***** = value2;
** * * *** *** ** ** * * ** * ****** ** * * * * * ** * *** ** = value3;
* ** * ** ** **** ****** * *** ** * * ** *
** ** ** *** * * * * *** *** * ** * ** value3;

}

int main()

{
** * * * ***** ** num;
* * * * * ** ** *** * * **** ** &num);
* **** ** * * * * ** ** ** *** ***** ** rabbit(num));
*** ***** **** * 0;

}
answered by (237 points)
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Hidden content!
#include <stdio.h>



long long int rabbit(int n)

{
* * * ** * ** **** * long int value1, value2, value3;
** ** ** ** ***** ** count = 1;
** ** * ** * ****** ** = 0;
* * * ***** * *** * * * ** * = 1;

    if (n == 2)
*** * *** ** * ** *** ** * ** ** * * * * 1;
*** * * * **** * * if (n == 1)
** * ****** ***** * *** ** ****** ** * ******** 1;
* * * ** * ****** * * *
** *** * * * * * * * ** * * ***** * * * (count < n)
*** * * ****** ** ** ** ** * * * * * **
* ** * * ** * * ** * ** * * ** ** ***** ***** *** ******* * = value1 + value2;
****** *** * * *** * *** * * ** ** *** * ******* ** ** * ******** * * **
* ***** ** ** ** ** * ** **** **** * ** * ** *** * *** * *** = value2;
* *** ** ** **** * *** ** ** * * **** ** ** * * * * ************ = value3;
** ** ** * * ** ** * * * **** *
* * * *** *** ** * * ***** * * ** * *** value3;

}

int main()

{
***** * ** * * * num;
* * ** ** ** * *** ** ** *** * &num);
*** * *** * **** ** ** * * * * * * * rabbit(num));
* * ** ***** ** ** ** * ** * 0;

}
answered by (-215 points)
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Hidden content!
#include * * ** * * *

#include * * * * *** * *



int main()

{
****** * * * * n, i;


* * ***** ** *** * * *** *** * **** &n) != EOF)
*** ** ******* * ** **
* ***** *** * * ** ** ** * * * * * **** long long int month[n];
**** *** ** *** ** * *** * * ** *** * * = 1, month[1] = 1;


* * * ** ** * * *** * * * = 2; i < n; i++)
** * ** * ** * ** *** * **** ** *
**** ** ***** *** * * * *** * **** ** * ** **** * * * = month[i-1] + month[i-2];
* * * * *** *** * *** **** * *** *** *


* **** * *** * * * **** * * * ** * *** * * * *** * month[n-1]);
*** *** * **** *


* * * *** ****** * ** * * ** 0;

}
answered by (38 points)
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Hidden content!
#include <stdio.h>

#include * **** *



int main()

{
** **** ** **** ** n, i;


***** ** * * *** * **** * * * &n) != EOF)
***** ** ** **
* * ***** * * * **** * ***** * * month[n];
* * * * * ** ** ** ** * * * ** *** ** * * = 1, month[1] = 1;


* * * * ** ** *** ** *** * * * ** * * = 2; i < n; i++)
** * ** *** ** * * ****** * ***
** ** * ****** * ** ****** * * * * ** * ** **** * * * ** * = month[i-1] + month[i-2];
*** ** *** * ** ** * ** * * * *** * * *


*** ***** * * ** * * ** *** * *** ** ***** * **** *** * ** * month[n-1]);
** * * * * ****


* * ********* * * * *** ** * * 0;

}
answered by (38 points)
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Hidden content!
#include <stdio.h>



long long int rabbit(int n)

{
** * ** * ** * ** * long int value1, value2, value3;
* * ** * ** ** * **** * * ** count = 1;
* **** ******* * * * * * * * * = 0;
* ** * * * ***** = 1;

    if (n == 2)
* *** ** * * **** ** ** ** * * ** * ** ** ** **** ** 1;
** * * *** ** * * ** ** if (n == 1)
*** ** ***** * *** * ** ** ** *** * ** 1;
* * *** ** ****** **
** ** ** ***** * * * * * ** * **** *** ** * * * (count < n)
* * * ********* * **** * * **** * *** ** ** *
** * ** ** * * * *** * ** ** ***** * ** *** * * ** ** * **** * **** = value1 + value2;
******* * * * * * ** * * * ** * ** **** *** ****** ****** * * *** *** * **
* *** **** * ** * ***** ** * * * ** *** * ** *** ** **** *** * ***** * = value2;
** ** * * * *** ** * ***** * * * * ***** *** ** * * * *** ** = value3;
***** * * ** **** * **** ** ** * * ***
** * ** * * * ** * ** * * * ** ** * * * * ** value3;

}

int main()

{
* * * * * * * ** *** num;
*** ******** *** ** *** * * * ** * ** * &num);
* ** ****** **** * * ** * * * * rabbit(num));
* * * ** * ****** ** *** * * 0;

}
answered by (126 points)
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Hidden content!
#include <stdio.h>



int main()

{
** * * ** * *** ** * *** i, num;
* * **** * ** **** * * * long total = 0, rabbit = 1, pairs = 1;


* ** * *** * ** ***** * ** * ** * * * &num);


**** *** ** * ** * ** = 2; i < num; i++)
* * *** * * * *


* * ** ** **** * ** *** ***** **** ** **** * = rabbit + pairs;
* ** * **** **** * ** * * **** ***** = rabbit;
* ******** *** ** **** ****** ****** ** = total;


* * * *** ** *** ** * * **
****** * * *** *** * * == 0)
* * * * * * **** * ***
* ** **** ** * * *** * * *** * ** * **** * ** * ** * *** **** *
* * ***** * * * * ** else if(num == 1)
* * * *** * * * * **
*** ** * * *** * ** * ** *** ********** * * * * * * ****
* *** *** ** * * ** *** * else if(num == 2)
* ** *** ***** * * **
* * * ** *** **** *** ** **** * * ** * * * *** * **** * **
** *** * ** * **** ** * else{
* * * * * * ** ******* *** * ***** * ** ** ** ** ** ***** *

    }




** * *** ** **** **** 0;

}
answered by (-189 points)
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Hidden content!
#include ***** * *** **

#include * **** * * *



long long int fib(int );



int main(){


* *** ******* *** **** * N;
**** *** **** ** *** ** * long int output;
* *** * *** * * **** ** ** * **** ** &N);
*** **** ** *** ** * * * *** * * * * ** ** ****
** ** *** ** * ** ** * ** ** *** *** *** = fib(N);
** ** **** ** * * *** * ** ** ****** * * ** ** * ** * ****** ** * *** output);
* ** **** **** ** **


* **** * *** ** * ** ** ** 0;

}



long long int fib(int * ***
* * * ** ****** * ***** * * long int last_2nd = 1, last = 1, output;
** ** * ** ***** ** i;
** ** ** **** ** * * * == 1 || N == 2)
* *** *** *** ** * * * * *** ****** * *** * * 1;
** * * *** * * * * ** **
******** ********* ** ***** = 2; i<N; i++){
******* * * ** * *** **** * *** ** * ** **** = last_2nd + last;
* * *** ** ************ * * * * * ** *** = last;
** * * * * ** * **** ** **** * * = output;
*** * * *** **** *** * *
* **** *** ** ******** * output;

}
answered by (-188 points)
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Hidden content!
#include <stdio.h>



long long int rabbit(int n)

{
** *** * **** ***** long int value1, value2, value3;
** * ** * ** * * * count = 1;
* * * *** * ***** ** ***** ** = 0;
* * ** * * * *** ** * ** = 1;

    if (n == 2)
** * * ** ** * * ** ** * * *** * * **** ** * 1;
* * * * ** ******* if (n == 1)
** * * ** ** * ** ********** *** ****** 1;
* *** * ** * ** * *** **
* ** * **** * **** ****** ** ***** * (count < n)
** * * **** * ** * ** ** ** * ***** *
* * * **** *** * * **** ***** * *** * * ** ** * * ** * * * * = value1 + value2;
* ******* *** * ** * * * * ** **** * * *** ** * *
* *** ** * **** ** ** * * * *** * *** * * ** * ******* ** * **** = value2;
** * * * * ***** ******** *** *** * * ** ** * * **** *** **** **** *** *** = value3;
** ** * * ** ** * ** * *** ** *** ** * * * * ** * * ***
* * **** * ** ** ** *** **** ** * * * *** value3;

}

int main()

{
* * * * *** * ** *** * * num;
* * *** * * ** * ***** ** &num);
** * * **** ** * ** * ** ***** * * rabbit(num));
* *** **** * ** * ** * ***** 0;

}
answered by (-218 points)
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