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A simple program to solve quadratic equations with

, 11 Nov 2010 CPOL 30K 3
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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

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Comments and Discussions

 
GeneralReason for my vote of 1 delta can be negative a=c=1E-8 and ... Pin
vtorri15-Nov-10 19:28
membervtorri15-Nov-10 19:28 
GeneralReason for my vote of 1 Low quality code, poor instructions ... Pin
CIDev10-Nov-10 8:43
memberCIDev10-Nov-10 8:43 
GeneralReason for my vote of 1 Is this from a 8 year old? Pin
sisira9-Nov-10 15:08
membersisira9-Nov-10 15:08 
GeneralReason for my vote of 2 Can crash ! Pin
YvesDaoust8-Nov-10 23:26
memberYvesDaoust8-Nov-10 23:26 
GeneralReason for my vote of 1 A major problem is it doesn't preven... Pin
Andrew Phillips7-Nov-10 15:01
memberAndrew Phillips7-Nov-10 15:01 
GeneralReason for my vote of 1 There are so many things wrong with ... Pin
Saurabh.Garg6-Jun-10 20:21
subeditorSaurabh.Garg6-Jun-10 20:21 

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