Trying to figure out why int recursiveSum(int n) won't work correctly. What should i write for the recursive function call(else)?

#include using namespace std;

int recursiveSum(int n); int main() { int n; cout << "Enter a number to calculate the sum: "; cin >> n;

cout << "The sum from 1 to " << n << " is " << recursiveSum(n) << endl; return 0; }

int recursiveSum(int n) { int sum;

if (n = 1) // base case { return n; } else // recursive function call { return ???; }

return sum; }