1: Modify the code to calculate the average of 4 numbers. #include #include using namespace std; // complete the code below cout << "Enter the first number:"; cout << "Enter the second number:"; average = (a+b+c+d)/n; cout << "Average values:" << average; return 0; } i need it ASAP please Thank you and i will appreciate it

main.cc file #include #include #include #include "cup.h" int main() { std::string drink_name; double amount = 0.0; std::cout << "What kind of drink can I get you?: "; std::getline(std::cin, drink_name); while (std::cout << "How much do you want to fill?: " && !(std::cin >> amount)) { // If the input is invalid, clear it, and ask again std::cin.clear(); std::cin.ignore(); std::cout << "Invalid input; please re-enter.\n"; } //================== YOUR CODE HERE ================== // Instantiate a `Cup` object named `mug`, with // the drink_name and amount given by the user above. //==================================================== while (true) { char menu_input = 'X'; std::cout << "\n=== Your cup currently has " << mug.GetFluidOz() << " oz. of " << mug.GetDrinkType() << " === \n\n"; std::cout << "Please select what you want to do with…

// LargeSmall.cpp - This program calculates the largest and smallest of three integer values.  #include <iostream> using namespace std; int main() {    // This is the work done in the housekeeping() function    // Declare and initialize variables here    int largest; // Largest of the three values    int smallest;   // Smallest of the three values        // Prompt the user to enter 3 integer values    // Write assignment, add conditional statements here as appropriate           // This is the work done in the endOfJob() function    // Output largest and smallest number.     cout << "The largest value is " << largest << endl;    cout << "The smallest value is " << smallest << endl;    return 0;  }