Berikut contoh listing program penghitung akar-akar persamaan kuadrat dengna pemilihan kondisi :
#include <iostream.h>
#include <conio.h>
#include <math.h>
void main()
{
float a,b,c,d,x1,x2;
cout<<"Penghitung akar-akar persamaan kuadrat";
cout<<endl;
cout<<"--------------------------------------";
cout<<endl;
cout<<"Format persamaan kuadrat : ax2+bx+c=0";
cout<<endl;
cout<<"Masukkan nilai a : ";cin>>a;
cout<<"Masukkan nilai b : ";cin>>b;
cout<<"Masukkan nilai c : ";cin>>c;
d=(b*b)-(4*a*c);
cout<<endl;
cout<<"Nilai Determinannya : "<<d;
cout<<endl;
if (d>0)
{
cout<<"akar-akarnya riil dan berbeda";
x1=((-b)+sqrt(d))/(2*a);
x2=((-b)-sqrt(d))/(2*a);
cout<<endl<<endl;
cout<<"akar-akarnya adalah : "<<endl;
cout<<"X1 = "<<x1<<endl;
cout<<"X2 = "<<x2;
}
else if (d==0)
{
cout<<"akar-akarnya riil dan sama";
x1=((-b)+sqrt(d))/(2*a);
x2=x1;
cout<<endl<<endl;
cout<<"akar-akarnya adalah : "<<endl;
cout<<"X1 = "<<x1<<endl;
cout<<"X2 = "<<x2;
}
else cout<<"akar-akarnya imajiner";
getch() ;
}
Monday, March 22, 2010
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