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bookChallenge: Working with the Array

Reminder how to access an array by index

main.cpp

main.cpp

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#include <iostream>

int main()
{
	int myArray[3] = { 67, 23, 87 };

	std::cout << myArray[0] << std::endl;
	std::cout << myArray[1] << std::endl;
	std::cout << myArray[2] << std::endl;
}

Note

Index counting starts from zero, making the first element in a list or array the zeroth element.

Task

Swipe to start coding

You have a student with grades in 4 subjects. Your task is to calculate the student’s average grade across all subjects.

  • The function calculateAverage takes an array of 4 integers representing the student’s grades.
  • Inside calculateAverage, add up all the grades in the array.
  • Then, divide the total by 4.0 (as a double) to get the average grade.

Example

{80, 90, 75, 95} => 85.0
{100, 100, 100, 100} => 100.0
{70, 80, 75, 76} => 75.25

Solution

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SectionΒ 3. ChapterΒ 7
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bookChallenge: Working with the Array

Swipe to show menu

Reminder how to access an array by index

main.cpp

main.cpp

copy

              
12345678910

            
#include <iostream>

int main()
{
	int myArray[3] = { 67, 23, 87 };

	std::cout << myArray[0] << std::endl;
	std::cout << myArray[1] << std::endl;
	std::cout << myArray[2] << std::endl;
}

Note

Index counting starts from zero, making the first element in a list or array the zeroth element.

Task

Swipe to start coding

You have a student with grades in 4 subjects. Your task is to calculate the student’s average grade across all subjects.

  • The function calculateAverage takes an array of 4 integers representing the student’s grades.
  • Inside calculateAverage, add up all the grades in the array.
  • Then, divide the total by 4.0 (as a double) to get the average grade.

Example

{80, 90, 75, 95} => 85.0
{100, 100, 100, 100} => 100.0
{70, 80, 75, 76} => 75.25

Solution

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Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 3. ChapterΒ 7
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