kardışık number

[Tuğba Yılmaz]

sample:
13 = 2² + 3²
14 = 1² + 2² + 3²

In this context, it entered between 1 and 9999 (if a larger or smaller number entered will be given a warning) whether a number kardışık number, and that number is the sum of what number you kardışık developed by the c program.
sample entries: 421
sample output: 14 – 15

[GReaper]

Google translate has seen better days...

[algorism]

sample:
13 = 2² + 3²
14 = 1² + 2² + 3²

In this context, it entered between 1 and 9999 (if a larger or smaller number entered will be given a warning) whether a number kardışık number, and that number is the sum of what number you kardışık developed by the c program.
sample entries: 421
sample output: 14 – 15

Sounds simple enough. What have you tried? What are you having trouble with? Post some code.

BTW, does anyone know what these numbers are called in English? Google translate doesn't seem to know.

[Tuğba Yılmaz]

#include <stdio.h>
#include <stdlib.h>


main()
{
  long int a,n,s1,s2,o;
  label: printf("Enter the number: ");
  scanf("%ld",&a);
  if (a<1 || a>9999)
  {
    printf("\n please enter 1 between 9999 number!\n\n");
    goto label;
  }
  for (n=1;n<a;++n)
  {
    s1=n*n;
    s2=(n+1)*(n+1);
    o=s1+s2;


    if(o==a){
       printf("\n numbers: %ld,%2ld",n,n+1);
    }


  }


  printf("\n\n");
}

not working 14 = 1² + 2² + 3²

[algorism]

You must know why your code isn't working for the given example. Your code only tests for two numbers in a row but your example needs three. Instead of a fixed number you'll need another loop.

So these so-called "kardışık numbers" (we still don't have a translation here) are numbers that can be represented as the sum of the squares of consecutive integers? Are the squares themselves "kardışık numbers"?

[WoodSTokk]

A "kardışık number" means "pyramid number"
Link: https://en.wikipedia.org/wiki/Square_pyramidal_number

[Matticus]

You should not be using goto. It is more appropriate to use a loop for that purpose.

[Tuğba Yılmaz]

main()
{
  long int a,n,s1,s2,o;
  label: printf("Enter the number: ");
  scanf("%ld",&a);
  if (a<1 || a>9999)
  {
    printf("\n please enter 1 between 9999 number!\n\n");
    goto label;
  }
  for (n=1;n<a;++n)
  {
    s1=(n*n)+((n+1)*(n+1));
    s2=(n+2)*(n+2);
    o=s1+s2;
    if(s1==a){
       printf("\n numbers: %ld,%ld",n,n+1);
    }
    else if(o==a){
       printf("\n numbers: %ld,%ld,%ld",n,n+1,n+2);
    }
  }
  printf("\n\n");
}

Alright thanks a lot I got it.Thanks a lot guys/gals.

[nerio]

A "kardışık number" means "pyramid number"
Link: https://en.wikipedia.org/wiki/Square_pyramidal_number

It does not mean "pyramid number".

Pyramid number is defined as a sum P_n=1^2+2^2+3^2+...+n^2, while this guy has for entry 421 output 14, 15 (14^2+15^2, which is a difference P_15-P_13, and no pyramid number directly).