# Program to Find nth Sunny Number

A Number is a Sunny number if 1 is added to that number and the square root of it becomes a whole number.

Example:

Given Number=24
(24+1)=25 square root of 25 =5(it is a whole number )
so, 8 is Sunny Number.

Given Number=13
(13+1)=14 square root of 14 =3.74(it is not a whole number )
so, 8 is not a Sunny Number.

Problem statement:-  Program to Find nth Sunny Number.

Data requirement:-

Input Data:- rangenumber

Output Data:- rangenumber, letest

Program in C

Here is the source code of the C Program to Find nth Sunny Number.

Code:

//Nth Sunny Number
#include <stdio.h>
#include<math.h>
int
main ()
{
int i, rangenumber, num = 1, c = 0, letest = 0;
printf ("Enter the Nth value:");
scanf ("%d", &rangenumber);
while (c != rangenumber)
{
int num1=num;
double root;
root=sqrt(num1+1);
if((int)root==root)
{
c++;
letest=num;
}
num = num + 1;
}
printf ("%dth Sunny number is %d", rangenumber, letest);
return 0;
}

Input/Output:
Enter the Nth value:5
5th Sunny number is 35

Program in C++

Here is the source code of the C++ Program to Find nth Sunny Number.

Code:

#include <iostream>
#include<cmath>
using namespace std;
int
main ()
{
int i, rangenumber, num = 1, c = 0, letest = 0;
cout<<"Enter the Nth value:";
cin>>rangenumber;

int sum=0;
while (c != rangenumber)
{
int num1=num;
double root;
root=sqrt(num1+1);
if((int)root==root)
{
c++;
letest=num;
}
num = num + 1;
}
cout<<rangenumber<<"th Sunny number is "<<letest;
return 0;
}

Input/Output:
Enter the Nth value:10
10th Sunny number is 120

Program in Java

Here is the source code of the Java Program to Find nth Sunny Number.

Code:

import java.util.Scanner;
public class NthSunnyNumber {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
int  rangenumber, num = 1, c = 0, letest = 0;
System.out.println("Enter Nth number:");
rangenumber=cs.nextInt();

while (c != rangenumber)
{
int num1=num;
double root;
root=Math.sqrt(num1+1);
if((int)root==root)
{
c++;
letest=num;
}
num = num + 1;
}
System.out.println(rangenumber+"th Sunny number is "+letest);
cs.close();
}
}

Input/Output:
Enter Nth number:
15
15th Sunny number is 255

Program in Python

Here is the source code of the Program to Find nth Sunny Number.

Code:

import math
rangenumber=int(input("Enter a Nth Number:"))
c = 0
letest = 0
num = 1
while c != rangenumber:
num1=num
root = math.sqrt(num1 + 1)
if int(root) == root:
c+=1
letest = num

num = num + 1
print(rangenumber,"th Sunny number is ",letest)

Input/Output:
Enter a Nth Number:7
7 th Sunny number is  63

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