#include //stdio.h
#include //conio.h
#include //math.h
#include //stdlib.h
#define maxy 10
float power(float value,int pwr)
{
int i;
float t=1;
for(i=0;i {
t = t*value;
}
return t;
}
float eval(float fun[],float val,int deg)
{
float t=0;int i=0;
for(i=0;i<=deg;i++)
{
t = t + fun[i] * power(val,i);
}
return t;
}
void main()
{
float a,b,c;
int deg,i;
float func[maxy]={0};
clrscr();
printf("\nEnter the Degree of the equation:");
scanf("%d",°);
printf("\nEnter the coefficients of the equation:\n");
for(i=deg;i>=0;i--)
{
printf(" X^%d = ",i);
scanf("%f",&func[i]);
}
for(i=-50;i<50;i++)
{
a = eval(func,i,deg);
b = eval(func,i+1,deg);
if((int)(b*100000)==0)
{
printf("\n\nThe solution is: %d",i+1);
getch();
exit(0);
}
if((int)(a*b*1000000)<0)
{
break;
}
}
for(i=0;i<100;i++)
{
float t = c;
c = (a*eval(func,b,deg) - b*eval(func,a,deg))/(eval(func,b,deg)-eval(func,a,deg));
if((int)(c*100000)>0)
{
a = min(a,b);
b = c;
}
else
{
a = max(a,b);
b = c;
}
if((int)(t*100000)==(int)(c*100000))
{
printf("\n\nThe solution is %f",c);
getch();
exit(0);
}
}
getch();
}
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