سورس برنامه ی حل معادله ی درجه دوم با گرفتن a و b و c
#include <iostream.h>
#include <math.h>

void main()
{
int a, b, c;
int delta;
cout<<"Please enter a, b, c as this structure: ax^2+bx+c=0"<<endl;
cin>>a>>b>>c;
delta = (b*b)-(4*a*c);
if(delta == 0)
{
cout<<"The only answer:n"<<"x= "<<(-b)/(2*a);
}
else if(delta > 0)
{
cout<<"Two answers:n"<<"x1= "<<((-b)+sqrt(delta))/(2*a);
cout<<"tx2= "<<((-b)-sqrt(delta))/(2*a);
}
}


//end