| quocdat11 |
Date: Sunday, 02/11/2008, 2:32 PM | Message # 1 |
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Nhóm: Removed
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#include
#include
#include
int ptb1(float a,float b)
{ float x;
if(a == 0){
if(b == 0)
cout<<"phuong trinh vo so nghiem: ";
else
cout<<"phuong trinh vo nghiem: ";
}
else{x=-b/a;
cout<<"phuong trinh co nghiem:x= "<< x; }
return 0; }
int ptb2(float a,float b,float c)
{ float d,x1,x2;
if(a == 0)
ptb1(b,c);
else { (d=(b*b)-(4*a*c));
if (d <0)
{ cout<<"phuong trinh vo nghiem: ";} else if(d == 0)
{ x1=-b/(2*a);
cout<<"phuong trinh co nghiem kep: "<< x1;}
else{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
cout<<"phuong trinh co 2 nghiem: "<< endl;
cout<<"x1= "< cout<<"x2= "< return 0;
}
}
}
int main() { float a,b,c;
clrscr();
cout<<"nhap he so a= ";
cin>>a;
cout <<"nhap he so b= ";
cin>>b;
cout<<"nhap he so c= ";
cin>>c;
ptb2(a,b,c);
getch();
return 0; } |
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