Code is not passing testcases

#1

#include<bits/stdc++.h>
using namespace std;
void targetSum(int *arr, int n, int target)
{
int left = 0;
int right = n - 1;
while (left <= right)
{
int sum = arr[left] + arr[right];
if (sum > target)
{
right–;
}
else if (sum < target)
{
left++;
}
else
{
cout << arr[left] << " and " << arr[right] << endl;
left++;
right–;
}
}
}
int main() {
int n;
cin>>n;
if(n > 1 && n < 1000)
{
int arr[n];
for(int i=0;i<=n;i++){
cin>>arr[i];
}
int x;
cin>>x;
sort(arr, arr + n);
targetSum(arr,n,x);
}
return 0;
}

#2

hi @cs17b010_60782e7cd0491d73 write left < right not <= else it will count same index twice
say 15 9 is there and u r looking for 10 then left and right will both point to 5 sum will be 10 but they should be 2 diff nos

#3

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