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A simple program to solve quadratic equations with

, 11 Nov 2010
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A simple program to calculate quadratic equation with.Input MUST have the format:AX2 + BX + C = 0EXAMPLE: input the equation 2X2 + 4X -30 = 0 as:A= 2 B= 4 C= -30The answers for AX2 + BX + C = 0 should be 3 and -5.x1=3x2=-5 bool solver(float...
A simple program to calculate quadratic equation with.
 

Input MUST have the format:
AX2 + BX + C = 0
 

EXAMPLE: input the equation
2X2 + 4X -30 = 0 as:
 

A= 2 B= 4 C= -30
 

The answers for AX2 + BX + C = 0 should be 3 and -5.
 
x1=3
 
x2=-5
 

 
 
bool solver(float a,float b, float c, float &x1, float &x2)
{
	float delta = sqrt( (b*b) - (4*a*c) );
 
    if (!a)  return false; 
 
    x1 = ( -b + delta)/(2*a);
    x2 = ( -b - delta)/(2*a);
 
	return true;
}
 

int main()
{
	float a=2,
              b=4,
              c=-30; 
	
 
/*
 	printf("a = ");
	scanf("%f", &a);
	printf("b = ");
	scanf("%f", &b);
	printf("c = ");
	scanf("%f", &c);
 
*/
 
float x1,x2;
if ( solver(a, b ,c, x1, x2) ) 	printf("x1=%f\nx2=%f\n",x1,x2);
 
return 0;
} 
 
...

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

About me:
I attended programming School and I have a degree in three programming languages.
C/C++, Visual Basic and Java. So i know i can code. And there is a diploma hanging on my wall to prove it.
I am a professional, I've gotten paid to teach coding. I am roughly 20 years old and i have been a teacher's assistant in programming ,
i have held a lecture in Visual basic programming. I have also coached students in C++, Java and Visual basic.

In my spare time i do enjoy developing computer games, and i am developing a rather simple flight simulator game
in the c++ programming language using the openGL graphics libray.
 
I've written about a dozen small simple applications and games.

Comments and Discussions

 
GeneralReason for my vote of 2 Can crash ! PinmemberYvesDaoust8-Nov-10 23:26 

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