امین جان سوال 2 خیلی جالب و قشنگه ولی هنوز حل نشده.
کد 4 : تعیین ریشه های معادله درجه دوم:
#include <conio.h>
#include<math.h>
#include <iostream>
using namespace std;
int main()
{
float a,b,c;
float delta,root1,root2;
//get numbers
cout<<"please Enter 3 number:"<<'\n';
cout<<"enter a: ";
cin>>a;
cout<<"enter b: ";
cin>>b;
cout<<"enter c: ";
cin>>c;
//calculate Delta
delta= (b*b-(4*(a*c)));
//check condition
if (delta>0) //2 roots
{
root1=(-b-sqrt(delta))/2*a;
root2=(-b+sqrt(delta))/2*a;
cout<<"root1 is:"<<root1<<'\n';
cout<<"root2 is "<<root2;
}
if (delta==0) //1 root
{
cout<<"quadratic equation has one root:"<<(-b/(2*a));
}
if (delta<0) //without root
{
cout<<"quadratic equation does'nt have any root";
}
_getch();
}
