Problem not solved again showing all the test cases failed

#include<bits/stdc++.h>
using namespace std;
int main() {
int t;
cin >> t;
while(t–){
int n;
cin >> n;
int a[n];
for(int i=0; i<n; i++){
cin >> a[i];
}
sort(a , a+n);
int k;
cin >> k;
int i=0;
int j=n-1;
while(i < j){
int sum=a[i]+a[j];
if(sum > k){
j–;
}
else if(sum < k){
i++;
}
else if(sum==k){
cout << a[i] << " " << “and” << " " << a[j] << endl;
i++;
j–;
}
}

}


return 0;

}

hello @aasif2364
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