cp1

#include<stdio.h>
int fibo(int);
int main()
{
    int num;
    int result;
    printf("enter nth number in fibo series : ");
    scanf("%d",&num);
    if(num<0)
    {
        printf("fibo of neg number is not possible\n");
    }
    else
    {
        result=fibo(num);
        printf("%d fibo 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));
    }
}