ex04-03.cpp

数据结构常用算法合集

//EX04-04.cpp
#include <iostream.h>
#include <conio.h>
#include <math.h>
void main()
{ float a,b,c,x1,x2,judge;
  cout <<"a,b,c=";
  cin >> a >> b >> c;
  judge=b*b-4*a*c;
  if (judge==0)
  { x1=x2=-b/(2*a);
    cout<<"x1=x2="<<x1<<endl;
  }
  if (judge>0)
  { x1=(-b+sqrt(judge))/(2*a);
    x2=(-b-sqrt(judge))/(2*a);
    cout << "x1="<< x1 << endl
         << "x2="<< x2 << endl;
  }
  if (judge<0)
  { float real=-b/(2*a);
    float v=sqrt(-judge)/(2*a);
    cout<<"x1="<<real <<"+"<<v<<"i\n"
        <<"x2="<<real <<"-"<<v<<"i\n";
  }
  getch();
}