int x, s = 0;
cout << "Enter the number : ";
cin >> x;
while (x != 0) {
s = s + x % 10;
x = x / 10;
}
C++ sum the digits of an integer
// sum the digits of an integer
int getSum(long long n) {
int sum = 0;
int m = n;
while(n > 0) {
m = n % 10;
sum = sum + m;
n = n / 10;
}
return sum;
}