Not displaying any output - c++

Question

Not displaying any output for the second loop of the function even though it is displaying the output for the cout statements in between the first and the second loop of the function. Enter 3 4 8 5 for cin. I need the scores to be 0 5 1. And the total score to be 6.
Code:
#include <bits/stdc++.h>
#include <iostream>
#include <vector>
using namespace std;
long getMaxScore(vector < long > a){
// Complete this function
long runningSum = 0;
int n = a.size();
vector<long> scores(n);
int j=0;
long totalScore;
for(int i = 0; i < n;)
{
scores[j] = runningSum%a[n-1];
runningSum = runningSum + a[n-1];
n--;
j++;
}
cout<<scores[0]<<endl;
cout<<scores[1]<<endl;
cout<<scores[2]<<endl;
for(long k=0; k<n; k++)
{
totalScore = 0;
totalScore+=scores[k];
cout<<totalScore<<endl;
}
//return totalScore;}
int main() {
int n;
cin >> n;
vector<long> a(n);
for(int a_i = 0; a_i < n; a_i++){
cin >> a[a_i];
}
long maxScore = getMaxScore(a);
return 0;}

Answer 1

Problem
The loop
for(int i = 0; i < n;)
{
scores[j] = runningSum%a[n-1];
runningSum = runningSum + a[n-1];
n--;
j++;
}
ends when n is equal to zero.
Hence, by the time the program encounters the loop
for(long k=0; k<n; k++)
{
totalScore = 0;
totalScore+=scores[k];
cout<<totalScore<<endl;
}
nothing inside the loop executed since k < n is false.
Solution
I suggest adding a line to reset the value of n before the second loop.
n = a.size();
for(long k=0; k<n; k++)
{
...
}
Move the line
totalScore = 0;
outside the loop to accumulate the score.
totalScore = 0;
for(long k=0; k<n; k++)
{
totalScore += scores[k];
cout << totalScore << endl;
}