Exam Average

Question

I'm trying to output the average of 4 exam scores. I can input values put the average is not ouput.
//program takes 4 exam scores and calculate average
#include<iostream>
using namespace std;
double average(int a[], int size);
int main() {
int studentScores[4];
cout << "This program calculates your average exam score." << endl;
cout << "Please input your test scores. Separate scores using a space." << endl;
for (int i = 0; i < 4; i++) {
int number;
cin >> number;
}
average(studentScores, 4);
system("pause");
return(0);
}
double average(int a[], int size) {
int sum = 0;
int i = 0;
for (int i = 0; i < size; i++) {
sum += a[i++];
}
return (sum / size);
}

Answer 1

https://code.sololearn.com/c31IV11l3uC2/?ref=app

Answer 2

inside the for loop in main, remove the variable number,
you don't need it. You should, instead use:
cin >> studentScore[i];
Also, in the for loop inside the average function put:
sum += a[i];
instead of:
sum += a[i++] ;

Answer 3

correct code is
function main() {
var exam1 = parseInt(readLine(), 10);
var exam2 = parseInt(readLine(), 10);
var exam3 = parseInt(readLine(), 10);
console.log(Exams.average(exam1, exam2, exam3)); // Call the static method
}
class Exams {
static average(...scores) {
let sum = 0;
for (let score of scores) {
sum += score; // Add each score to the sum
}
// Calculate and return the rounded average
return Math.round(sum / scores.length);
}
}