Metodo Gauss Seiden

#include <iostream>
#include <cmath>
#include <conio.h>
using namespace std;int main()

{
double ti1, ti2, ti3, x, y, z, A;
float x1, y1, z1, x2, y2, z2, x3, y3, z3;cout <<"introduce la matriz \n";
cin >> x1>> y1>> z1>> ti1;
cout<<"\n";
cin >> x2>>y2>> z2>> ti2;
cout<<"\n";
cin >> x3>> y3>> z3>> ti3;
if(abs(x1) > (abs(y1)+ abs(z1)) )cout <<"\n"<<x1<<" "<<y1<<" "<<z1<<" "<<ti1<<endl;
else if (abs(x2) >(abs(y2)+abs(z2)) )cout <<"\n"<<x2<<" "<<y2<<" "<<z2<<" "<<ti2<<endl;
else if (abs(x3) >(abs(y3)+abs(z3)) )
{cout <<"\n"<<x3<<" "<<y3<<" "<<z3<<" "<<ti3<<endl;
}
if(abs(y1) > (abs(x1)+abs(z1)) )cout <<"\n"<<x1<<" "<<y1<<" "<<z1<<" "<<ti1<<endl;
else if (abs(y2) >(abs(x2)+abs(z2)) )cout <<"\n"<<x2<<" "<<y2<<" "<<z2<<" "<<ti2<<endl;
else if(abs(y3) >(abs(x3)+abs(z3)) )
{cout <<"\n"<<x3<<" "<<y3<<" "<<z3<<" "<<ti3<<endl;
}
if(abs(z1) >...