Bhaskara's Formula(URI Online Judge | 1036)

URI Online Judge | 1036

Bhaskara's Formula

Adapted by Neilor Tonin, URI  Brazil

Timelimit: 1

Read 3 floating-point numbers. After, print the roots of bhaskara’s formula. If it's impossible to calculate the roots because a division by zero or a square root of a negative number, presents the message “Impossivel calcular”.

Input

Read 3 floating-point numbers A, B and C.

Output

Print the result with 5 digits after the decimal point or the message if it is impossible to calculate.

Input Samples	Output Samples
10.0 20.1 5.1	R1 = -0.29788 R2 = -1.71212

0.0 20.0 5.0

Impossivel calcular

10.3 203.0 5.0

R1 = -0.02466 R2 = -19.68408

10.0 3.0 5.0

Impossivel calcular

Solution:

#include<bits/stdc++.h>

using namespace std;

int main()

{

double a,b,c,r1,r2;

cin>>a>>b>>c;

if((b*b-(4*a*c) )<0 || a==0)

{

printf("Impossivel calcular\n");

}

else{

r1=(-b+sqrt(b*b-4*a*c))/(2*a);

r2=(-b-sqrt(b*b-4*a*c))/(2*a);

printf("R1 = %.5lf\n",r1);

printf("R2 = %.5lf\n",r2);

}

}