Write a C++ program to compute the sum of two given non-negative integers x and y as long as the sum has the same number of digits as x. If the sum has more digits than x then return x without y

#include <iostream>
#include<string>

using namespace std;

int test(int x, int y)
        {
           return to_string(x + y).length() > to_string(x).length() ? x : x + y;
        }
        
int main() 
 {
  cout << test(4, 5) << endl;  
  cout << test(7, 4) << endl;  
  cout << test(10, 10) << endl;  
  return 0;    
}