why is the output for this code B A B  #include using namespace std; int main() { int n; char a='A', b='B', c;   cout << "Enter #n: "; cin >> n;   int i = 0; while (i

using c++ complete the code where it says  , /* Your code goes here */ compute z= y- √2   #include <iostream>#include <cmath>#include <ios>#include <iomanip>using namespace std; int main() {double x;double y;double z; cin >> x;cin >> y; /* Your code goes here */ cout << fixed << setprecision(2); // This will output only 2 decimal places.cout << z << endl; return 0;}

#include <iostream>using namespace std; double average(int sum_of_grades,int num_grades){return sum_of_grades/(float)num_grades;} int main() {int num_grades,grade,sum=0;char grade_value;cout<<"Enter the number of grades"<<endl;cin>>num_grades;for(int i=0;i<num_grades;i++){cout<<"Enter a numeric grade between 0-100"<<endl;cin>>grade;sum+=grade;}double avg=average(sum,num_grades);if(avg>=90 && avg<=100)grade_value='A';else if(avg>=80 && avg<=89)grade_value='B';else if(avg>=70 && avg<=79)grade_value='C';else if(avg>=60 && avg<=69)grade_value='D';else if(avg>=0 && avg<=59)grade_value='F';cout<<"The grade is "<<grade_value;}   review if the written c++ code is correct then organize the code and write comments for each part of the program explaining what they do.

What will the following code display? #include using namespace std; void ResetZero(int); int main() { int x = 2; cout << x << endl; ResetZero(x); cout < x << endl; return 0; void ResetZero(int num) { num = 0; cout << num << endl; }