Test_Repo/pr4 at main · 33hm/Test_Repo · GitHub

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Program Name:- All happy numbers between 1 to n.

INPUT:-

#include<stdio.h>

 int main()

 {

 int num,temp,sum;

 int i;

 int limit;

 printf("Enter a number(upper limit):");

 scanf("%d",&limit);

 for(i=1;i<=limit;i++)

 {

 num=i;

 sum=0;

 while(sum!=1&&sum!=4)

 {

 sum=0;

 while(num>0)

 {

 temp=num%10;

 sum+=(temp*temp);

 num=num/10;

 }

 num=sum;

 }

 if(sum==1)

 printf("%d\n",i);

 }

 return 0;

 }

OUTPUT:-

Enter a number(upper limit):100

 1

 7

 10

 13

 19

 23

 28

 31

 32

 44

 49

 68

 70

 79

 82

 86

 91

 94

 97

 100

Get it on Google Play:-

https://play.google.com/store/apps/details?id=com.herokuapp.codecracker