C Program to Find Armstrong Series

It is a sample c program to generate Armstrong number series from 1 to 1000. 

Program Source Code
//C Program to Find All Armstrong Number between 1 to 1000.
#include"stdio.h"
#include"conio.h"
void main()
{
  int no,r,sum=0,i;
  clrscr();
  printf("\n\n***The Armstrong No. Series Between 1 and 1000 are:***  ");
  for(i=1;i<=1000;i++)
  {
   sum=0;
   no=i;
   while(no!=0)
   {
    r=no%10;
    no=no/10;
    sum=sum+(r*r*r);
   }
   if(sum==i)
    printf("\n%d",i);
  }
   getch();
}

Output

C Program for Check Armstrong Number

It is a sample C program to find accepted number is Armstrong number on not.


Program Source Code

//Write a program to check accepted number is armstrong number or not.
#include"stdio.h"
#include"conio.h"
void main()
{
  int i,no,r,sum=0;
  clrscr();
  printf("*******Armstrong Number******");
  printf("\n Enter a number");
  scanf("%d",&no);
  i=no;
  while(no!=0)
   {
    r=no%10;
    sum=sum+(r*r*r);
    no=no/10;
   }
   if(sum==i)
    printf("Number is a Armstrong number\n");
   else
    printf("Number is not a armstrong number\n");
   getch();
}

Output

Find Fibonacci Series Using Recursion in C Programming

It is sample C program which demonstrate how to use recursion concept in c programming. Here is a recursion program which accept a number from user and generate Fibonacci series using recursion.

Program Code

//Find Fibonacci Series Using Recursion in C Programming
#include"stdio.h"
#include"conio.h"
fibonacci(int n);
void main()
{
 int n,r,i;
 clrscr();
 printf("********** Fibonacci Series Using Recursion *********\n");
 printf("enter a number: ");
 scanf("%d",&n);
 printf("\n\n");

 for(i=0;i<=n;i++)
 {
  r=fibonacci(i);
  printf("\t%d",r);
 }
 getch();
}

fibonacci(int n)
{
 int f;
 if((n==1)||(n==2))
  return(1);
 else if(n==0)
  return(0);
 else
  f=fibonacci(n-2)+fibonacci(n-1);
 return(f);
}

Output

C Program With Recursion: Find Factorial Using Recursion in C Programming

It is a sample program example which demonstrate recursion in C programming. It is a factorial program with recursion. Accept number from the user and generate factorial of accepted number using recursion.

Program Code

#include"stdio.h"
#include"conio.h"
fact(int n);
void main()
{
 int n,r;
 clrscr();
 printf("************* Find Factorial of Number Using Recursion *************");
 printf("\n enter a number ");
 scanf("%d",&n);
 r=fact(n);
 printf("\n Factorial of %d is =  %2d\t",n,r);
 getch();
}

fact(int n)
{
 int f;
 if((n==0)||(n==1))
  return(1);
 else
  f=n*fact(n-1);
 return(f);
}

Output