Why testcases are failing?

#1

#include<bits/stdc++.h>
using namespace std;

void twoNumberSum(int arr[], int targetSum, int n) {
sort(arr, arr + n);
int L = 0;
int R = n - 1;

while (L < R)
{
	if (arr[L] + arr[R] < targetSum)
	{
		L = L + 1;
	}
	else if (arr[L] + arr[R] > targetSum) {
		R = R - 1;
	}
	else if ( arr[L] + arr[R] == targetSum)
	{
		cout << arr[L] << "and" << arr[R] << "\n";
	}

}

}

int main() {
int n;
cin >> n;
int arr[n] = {0};
for (int i = 0; i < n; ++i)
{
cin >> arr[i];
}
int targetSum;
cin >> targetSum;

twoNumberSum(arr, targetSum, n);
return 0;

}

#2

give space between number and string and.

#3

Sry sir but can you explain more?

#4

you should write cout<<arr[L]<<" and “<<arr[R]<<”\n"; give space between arr[L] , “and” , arr[R]

#5

Sir i did it’s still not working not giving all pairs and running infinte loop

#6

please help what’s wrong in code

#7

please help what’s wrong in code asap

#8

Break from the loop when u find the pair.

#9

I did but Sir not giving all pairs

#10

Try the following:
for(int i=0;i<n;i++)
{
for(int j=i+1;j<n;j++)
{
if(a[i]+a[j]==target and a[i]<=a[j]){
cout<<a[i]<<" and "<<a[j]<<endl;
}
}
}