This is c++ programming language and can you please use a simple method Im a beginner

Consider the following program tthe numbers from1 to 25 bellow are line using namespace std int pandn (int &a, int &b, int c) 2 3 5. 6. int a-b-c if (aco) return (b-a) 8. return (a-b) void main Of 9. 10 int x= 10, y-8, z-6; z pandn (x, y, z); 12. 13. 14. 15. 16. What are the input/output in the function pandn? 2. Trace the program, and show the sequence of executed instructions with the corresponding line number and the result of their execution