C++ Programming Assignment Help - Solution on Sum and the Average of The Numbers

Question - C++ program calculates the sum and average of 5 numbers based on the user's choice.

 

C++ Programming Assignment Help - Solution on Sum and the Average of The Numbers

#include
#include
using namespace std;

int sumOfArray(int arr[5])
{
    int sum =0;
    for(int i=0;i<5;i++)
        {
         sum = sum+arr[i];
        }
    return sum;
}

float avgOfArray(int arr[5])
{
    int sum =0;
    float avg;
    for(int i=0;i<5;i++)
        {
         sum = sum+arr[i];
        }
    avg = (float)sum/5;
    return avg;
}
int main()
{
    int arr[5];
    int sum ;
    float avg;
    int userChoice;
    cout<<"Enter 5 numbers "<     for(int i=0;i<5;i++)
        {
            cin>>arr[i];
        }
     cout<<"Press 1 calculate the average of the numbers entered"<      cout<<"Press 2 calculate the sum of the numbers entered"<      cout<<"Press 3 calculate both the sum and the average of the numbers entered"<      cin>>userChoice;
     switch(userChoice)
     {
        case 1:
        {
          avg = avgOfArray(arr);
          cout<<"The average of the numbers entered is: "<           break;
        }
        case 2:
        {
          sum = sumOfArray(arr);
          cout<<"The sum of the numbers entered is: "<           break;
        }
        case 3:
        {
          sum = sumOfArray(arr);
          avg = avgOfArray(arr);
          cout<<"The average of the numbers entered is: "<           break;
        }
        default:
        {
          cout<<"Wrong Input by User"<         }
     }
   return 0;
}
 

Student - do My C++ Programming Assignment

Overall, it looks good and should work as intended, but there are a few minor improvements that can be made:

1. Missing cout statements: The output messages for the average and sum calculations are missing the actual values. Make sure to include the values in the output statements.

2. Displaying average with two decimal places: You can use fixed and setprecision manipulators from the <iomanip> header to display the average with two decimal places for better presentation.

3. Resetting sum variable in avgOfArray: In the avgOfArray function, you can reset the sum variable to zero before calculating the sum of array elements.

4. Formatting the output of average: When displaying the average, you can format it to show exactly two decimal places for a more consistent and cleaner output.

 

Revised version of the code

 

#include <iostream>
#include <iomanip>
using namespace std;

int sumOfArray(int arr[5])
{
    int sum = 0;
    for (int i = 0; i < 5; i++)
    {
        sum = sum + arr[i];
    }
    return sum;
}

float avgOfArray(int arr[5])
{
    int sum = 0;
    for (int i = 0; i < 5; i++)
    {
        sum = sum + arr[i];
    }
    return static_cast<float>(sum) / 5;
}

int main()
{
    int arr[5];
    int sum;
    float avg;
    int userChoice;

    cout << "Enter 5 numbers: ";
    for (int i = 0; i < 5; i++)
    {
        cin >> arr[i];
    }

    cout << "Press 1 to calculate the average of the numbers entered" << endl;
    cout << "Press 2 to calculate the sum of the numbers entered" << endl;
    cout << "Press 3 to calculate both the sum and the average of the numbers entered" << endl;
    cin >> userChoice;

    switch (userChoice)
    {
    case 1:
        avg = avgOfArray(arr);
        cout << "The average of the numbers entered is: " << fixed << setprecision(2) << avg << endl;
        break;

    case 2:
        sum = sumOfArray(arr);
        cout << "The sum of the numbers entered is: " << sum << endl;
        break;

    case 3:
        sum = sumOfArray(arr);
        avg = avgOfArray(arr);
        cout << "The sum of the numbers entered is: " << sum << endl;
        cout << "The average of the numbers entered is: " << fixed << setprecision(2) << avg << endl;
        break;

    default:
        cout << "Wrong Input by User" << endl;
    }

    return 0;
}