itsa基 7 複數運算

#include <iostream>
using namespace std;

int main ()
{
int n,a,b,c,d,sum,sum1;
char k;
sum = sum1 = 0;
cin >> n;
for (int i = 0;i < n; i++)
{
cin >> k;
cin >> a >> b >> c >> d;
if (k == '+')
{
sum = a + c;
sum1 = b + d;
cout << sum << " " << sum1 << endl;
}
else if (k == '-')
{
sum = a - c;
sum1 = b - d;
cout << sum << " " << sum1 << endl;
}
else if (k == '*')
{
sum = a * c - b * d;
sum1 = b * c + a * d;
cout << sum << " " << sum1 << endl;
}
else if (k == '/')
{
sum = (a * c + b * d) / (c * c + d * d);
sum1 = (b * c - a * d) / (c * c + d * d);
cout << sum << " " << sum1 << endl;
}
}
return 0;
}