Harshad(or Niven) Numbers are those integers who are who are divisible by the sum of their digits.

The following program prints the Harshad Numbers within a range specified by the user.

PROGRAM:

/********************************************
 **********HARSHAD NUMBERS*******************
 (c) 2017 Manas Sharma - https://bragitoff.com
 *******************************************/
#include<stdio.h>
#include<stdlib.h>
main(){
  int i,j,init,final,n,sum;
  printf("Enter the starting point(a):\n");
  scanf("%d",&init);
  printf("Enter the ending point(b):\n");
  scanf("%d",&final);
  printf("\nThe Harshad Numbers are as follows:\n");
  for(i=init;i<=final;i++){
    n=i;
    sum=0;
    while(n>0){
      sum=sum+n%10;
      n=n/10;
    }
    if(i%sum==0){
      printf("%d\n",i);
    }
  }
}

OUTPUT:

Manas Sharma

Ph.D. researcher at Friedrich-Schiller University Jena, Germany. I’m a physicist specializing in computational material science. I write efficient codes for simulating light-matter interactions at atomic scales. I like to develop Physics, DFT, and Machine Learning related apps and software from time to time. Can code in most of the popular languages. I like to share my knowledge in Physics and applications using this Blog and a YouTube channel.

manas.bragitoff.com/