This is a c++ program. The question is “Find the sum of digits in a non-negative 4 digit number.” Can you please explain the solution in detail. I don’t want the answer, I want the explanation of how...

This is a c++ program. The question is “Find the sum of digits in a non-negative 4 digit number.” Can you please explain the solution in detail. I don’t want the answer, I want the explanation of how to find the answer.
> num; 7. 8 9. 10 11 cout <" the="" sum="" is"="">< "="; 12 13 int digl,dig2,dig3; 14 15 digl=numX10; num=num/10; 16 17 dig2=num%10; num=num/10; 18 19 20 dig3=numX10; num=num/10; 21 22 23 24 sum-digl+dig2+dig3+num; 25 26 cout << sum << endl; 27 return e; 28 29 ">
Extracted text: #include #include using namespace std; 1 4 5A int main() { 6. int num, sum=0; cout < "enter="" a="" non="" negative="" 4="" digit="" number";="" cin="">> num; 7. 8 9. 10 11 cout <" the="" sum="" is"="">< "="; 12 13 int digl,dig2,dig3; 14 15 digl=numx10; num=num/10; 16 17 dig2=num%10; num=num/10; 18 19 20 dig3=numx10; num=num/10; 21 22 23 24 sum-digl+dig2+dig3+num; 25 26 cout << sum << endl; 27 return e; 28 29

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