Explanation of Solution
Recursive function for nth Fibonacci numbers:
The recursive function for nth Fibonacci number is shown below:
/* Function definition for compute nth Fibonacci number */
int recursiveFibFunction(int n)
{
/* If "n" is less than or equal to "1", then */
if (n <= 1)
//Return value of "n"
return n;
/* Otherwise Recursively call the function "recursiveFibFunction" */
return recursiveFibFunction(n-1) + recursiveFibFunction(n-2);
}
Explanation:
The above function is used to compute the nth Fibonacci numbers.
- In this function, first check the value of “n”. If the value of “n” is less than or equal to “1” that is value of “n” is either “1” or “0”, then returns the given “n” value.
- Otherwise, recursively call the function “recursiveFibFunction”.
Complete executable code:
The complete code is implemented for Fibonacci number is shown below:
//Header file
#include<iostream>
//For standard input and output
using namespace std;
//Function declaration for "recursiveFibFunction" function
int recursiveFibFunction(int n);
//Main function
int main ()
{
//Initializes the number to "8"
int number = 8;
/* Dispay fibonacci number by calling the function "recursiveFibFunction" */
cout << number << "th Fibonacci number is: "<< recursiveFibFunction(number) << endl;
return 0;
}
/* Function definition for compute nth Fibonacci number */
int recursiveFibFunction(int n)
{
/* If "n" is less than or equal to "1", then */
if (n <= 1)
//Return value of "n"
return n;
/* Otherwise Recursively call the function "recursiveFibFunction" */
return recursiveFibFunction(n-1) + recursiveFibFunction(n-2);
}
8th Fibonacci number is: 21
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Chapter 14 Solutions
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