Answer:
#include <iostream> 
using namespace std; 
 
int main() 
{ 
 int input = 0; 
 int count = 0; 
 int sum = 0; 
 int sumNegative = 0; 
 
 while (true) { 
 cout << "Enter a number: "; 
 cin >> input; 
 if (input == 0) break; 
 count++; 
 sum += input; 
 if (input < 0) { 
 sumNegative += input; 
 } 
 } 
 cout << "Count of the numbers: " << count << endl; 
 cout << "Sum of all the numbers: " << sum << endl; 
 cout << "Sum of the negative numbers: " << sumNegative << endl; 
}
Step-by-step explanation:
Your requirements regarding the sum and the negative numbers was a bit vague so I just did something you can probably adjust easily to your liking.