#include<stdio.h>
#include<conio.h>

void main()
{
 int n;
 void fib(int n);
 clrscr();

 printf("Enter any no.");
 scanf("%d",&n);
 clrscr();

 printf("Hit any key to continue");
 getch();
 clrscr();
 printf("Fibonacci of %d is \n");
 fib(n);

 getch();

}
 void fib(int n)
 {
  static int x,y;
  int temp;
  if(n<=1)
  {
   x=0;
   y=1;
  }
  else
  {
   fib(n-1);
   temp=y;
   y=x+y;
   x=temp;
  }
  printf(" %d\n",x);

  return;
}

#include<stdio.h>
#include<conio.h>
void main()
{
 int a=0,b=1,c,n,i;
 clrscr();
 printf("Enter n:");
 scanf("%d",&n);
 printf("The fibonacci sequence is as follows : \n");
 for(i=1;i<=n;i++)
 {
   c=a+b;
   printf("%d ",c);
   a=b;
   b=c;
 } 
 printf("The nth number in the fibonacci sequence is : %d",c);
 getch();
}

// n th number of a fibonacci series


#include<stdio.h>
#include<conio.h>

void main ()
{
	int i,k = 0 , j = 1 ,n,res;
	printf ( " \n enter the number " );
	scanf ( "%d",&n ) ;

//	printf ( "\n the series is 0, 1" ) ;

	for ( i= 2 ; i<n;i++ )
	{
		res= k+j ;
		k=j;
		j=res;
  //		printf ( ", %d" ,res ) ;
	}
	printf ( " \n The n th term is %d " ,res ) ;

	getch() ;
}

main()
{ int a=0,b=1,c,n,i;
printf("enter nth number");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
c=a+b;
printf("fibonacci series is %d",&c);
a=b;
b=c;
}
getch();
}

#include<stdio.h>
#include<conio.h>
void main()
{
int n,a=-1,b=1,c;
printf("Enter n:");
scanf("%d",&n);
for(int i=0;i<=n;i++)
{
c=a+b;
a=b;
b=c;
}
printf("Answer:%d",c);
}

#include<stdio.h>
#include<conio.h>
void main()
{
int f=0,s=1,t,n,i;
clrscr();
printf("\nENTER THE VALUE OF N\n");
scanf("%d",&n);
if(n==1)
  printf("FIBONACCI NUMBER IS 0");
else if(n==2)
  printf("FIBONACCI NUMBER IS 1");
else
  {
    for(i=3;i<=n;i++)
      {
        t=f+s;
        f=s;
        s=t;
      }
    printf("\nFIBONACCI NUMBER IS %d",t);
  } 
getch();
}

#include<stdio.h>
#include<conio.h>
void main()
{
int a=-1,b=1,c,n,i;
printf("enter the number");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
c=a+b;
printf("%d",c);
a=b;
b=c;
}
getch();
}