Thread: pointer's problem

please help me to correct this program
i don't know why the answer in the final is incorrect!!!

Code:

#include<stdio.h>
#include<math.h>
#include<conio.h>
void input()
{
float a,b,c;
printf("Coefficient of X^2 = ");
scanf("%f",&a);
printf("Coefficient of X = ");
scanf("%f",&b);
printf("Constant term = ");
scanf("%f",&c);
}
void quadratic(float a, float b, float c, float *d, float *root1, float *root2)
{

*d=pow(b,2)-(4*a*c);
if (d>=0)
{
*root1=(-b+(sqrt(pow(b,2)-(4*b*c)))/(2*a));
*root2=(-b-(sqrt(pow(b,2)-(4*b*c)))/(2*a));
}
}

void output()
{
float d,root1,root2;
if (d<0)
printf("\nThe root of X are imaginary.");
else if (d==0)
printf("\nThe root of X is %g.",root1);
else if (d>0)
printf("\nThe roots of X are %g and %g.\n",root1,root2);
}
void main()
{
float a,b,c,d,root1,root2;
input();
quadratic(a,b,c,&d,&root1,&root2);
output();

}

[code][/code]tagged by Salem