Question

What is the output of this program?
public class HW{
public static void main(String[] args){
int n = 365;
int sum = 0;
while(n > 0){
int digit = n % 10;
sum = sum + digit;
}
System.out.println(sum);
}
}

Answer 1

Answer:

Output : Infinity ♾

Dry Run :

n = 365

sum = 0

digit = 0

1st Case :

digit = 365 % 10 = 36

sum = 0 + 36 = 36

2nd Case :

digit = 36 % 10 = 3

sum = 36 + 3 = 39

3rd Case :

digit = 3 % 10 = 3

sum = 39 + 3 = 41

4th Case :

digit = 3 % 10 = 3

sum = 41 + 3 = 44

5th, 6th, 7th . . . Case :

digit = 3 and so on . . . . .. Infinity times

sum = 44 + 3 + 3 + 3 + . . . . . . Infinity ♾

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