근의 공식 알고리즘 소스코드

oid QuadraticEquation(double A,double B,double C)
{

 if ( A == 0 )
 {
  printf("This equation is not Quadratic\n");
  return ;
 }

 double Temp ;
 Temp = B*B - 4*A*C ;

 if ( Temp >= 0 )
 {
  double ans1,ans2 ;
  ans1 = ( -1*B + sqrt(Temp) ) / ( 2*A ) ;
  ans2 = ( -1*B - sqrt(Temp) ) / ( 2*A ) ;

  printf("Two Real Roots: x1 = %f x2 = %f\n",ans1,ans2);
 }
 else 
 {
  double real , complex ;
  real = ( -1*B ) / ( 2*A ) ;
  complex = sqrt(-1*Temp) / ( 2*A ) ;

  printf("Complex Conjugate Roots :\n");
  printf("x1,2 = %f +- %f i \n",real,complex);
 }

}