#include <stdio.h>

#include<conio.h>

int fibo(int);

int main()

{

int num, result;

printf(“Enter the nth number in fibonacci series: “);

scanf(“%d”, &num);

if (num < 0)

{

printf(“Fibonacci of negative number is not possible.\n”);

}

else

{

result = fibo(num);

printf(“The %d number in fibonacci series is %d\n”, num, result);

}

getch();

return(0);

}

int fibo(int num)

{

if (num == 0)

{

return(0);

}

else if (num == 1)

{

return(1);

}

else

{

return(fibo(num – 1) + fibo(num – 2));

}

}

Output:-