**Lucas numbers**: It is similar to Fibonacci numbers, each Lucas number is defined to be the sum of its two immediate previous terms Where as the first two number are 2 and 1.

The Lucas numbers are as following :

**2 1 3 4 7 11 18 29 47 76**

**#include**<stdio.h>

**#include**<conio.h>

int main()

{

int x,y,z,num;

printf("Enter the limit of Lucas number : ");

scanf("%d",

**&**num);
x=2;

y=1;

while(num>=x)

{

printf(" %d",x);

z=x+y;

x=y;

y=z;

}

getch();

getch();

**return 0**;

}

**/***************Output*****************

Enter the limit of Lucas number :

**125****2 1 3 7 11 18 29 47 76 123**

**************************************/**

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thanx for the program now its very easy

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