Happy Number TIme Limitation issue

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  • 0

    the error means the program runs forever unless stopped.
    the code above should have this behavior for n a not happy number, for example 4, where it will iterate endlessly in the

    while(sum!=1){  /// for n = 4
        sum = 0; 
            r = n%10; 
            sum=sum + (r^2);
            n = n/10;
    Sum+= n^2; // here sum == 16 and n =0 after the 1st iteration
               // after the second iteration sum = 0 and n = 0 and the while will never finish

  • 0

    "HOw can i make better?"

    For starters, you could format it so it becomes readable.

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