UVA Problem 10591 Solution

Problem Solving, UVa

#include<bits/stdc++.h>

using namespace std;

int main()

{

int i,j,k,d,sum,num,tc,n,ans,digit;

while(cin>>tc)

{

for(k=1;k<=tc;k++)

{

cin>>n;   

num=n,ans=0;

while(n>9)

{



    while(n!=0)

{

    digit=n%10;

    n/=10;

    ans+=digit*digit;

   

}

n=ans;

ans=0;

}

while(n<9)

{

if(n<=9){

      ans=n;

      break;

      }   

}



if(ans==1 || ans==7)

    printf("Case #%lld: %lld is a Happy number.\n",k,num);

else

    printf("Case #%lld: %lld is an Unhappy number.\n",k,num);

}

}

return 0;

}

 

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