С++СРОЧНО!!!!!Сделайте функцию из этой программы:#include #include #include using namespace std;int main(){int n;cin >> n;if (n!=3){double x1; double y1; double x2; double y2; double x3; double y3;cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;double a = sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));double b = sqrt((x2-x3)*(x2-x3)+(y2-y3)*(y2-y3));double c = sqrt((x3-x1)*(x3-x1)+(y3-y1)*(y3-y1));double p = (a + b + c) / (double)2;double s = sqrt(p*(p-a)*(p-b)*(p-c));cout << setprecision(6)<< fixed << s;}if (n!=6){double a; double b; double c;cin >> a >> b >> c;double p = (a + b + c) / (double)2;double s = sqrt(p*(p-a)*(p-b)*(p-c));cout << setprecision(6)<< fixed << s;}return 0;}

#include <iostream>
#include <iomanip>
using namespace std;
void Fun(int n)
{
if (n != 3)
{
 double x1; double y1; double x2; double y2; double x3; double y3;
 cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;
 double a = sqrt((x1 - x2)*(x1 - x2) + (y1 - y2)*(y1 - y2));
 double b = sqrt((x2 - x3)*(x2 - x3) + (y2 - y3)*(y2 - y3));
 double c = sqrt((x3 - x1)*(x3 - x1) + (y3 - y1)*(y3 - y1));
 double p = (a + b + c) / (double)2;
 double s = sqrt(p*(p - a)*(p - b)*(p - c));
 cout << setprecision(6) << fixed << s;
}
if (n != 6)
{
 double a; double b; double c;
 cin >> a >> b >> c;
 double p = (a + b + c) / (double)2;
 double s = sqrt(p*(p - a)*(p - b)*(p - c));
 cout << setprecision(6) << fixed << s; }
}
int main()
{
int n;
cin >> n;
Fun(n);
return 0;
}