How it can be 6 ?

Question

Is anybody can explain this again to me ?? How this code works ??

int x = 123;
int sum = 0;
while(x>0){
sum += x%10;
x=(x-x%10)/10;}
cout << sum;

Answer 1

1st time: sum=123%10=3, x=(123-3)/10=12
2nd time: sum=3+(12%10)=3+2=5, x=(12-2)/10=1
3rd time: sum=5+(1%10)=5+1=6, x=(1-1)/10=0,
Now since x is not greater than 0 so the loop stops and the last calculated value of sum =6.

Answer 2

Thanks saumya, now i know how the loop is works. I'm forget if there is a loop (while) function on it. hehe

Answer 3

Sorry for not write the code :v
Output of the code will be 6. please help

Answer 4

????