Code:
#include stdio.h
int fibo(int);
int main()
{
int num;
int 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);
}
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:
Enter the nth number in fibonacci series: 8
The 8 number in fibonacci series is 21
Enter the nth number in fibonacci series: 12
The 12 number in fibonacci series is 144
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