Regula Falsi Method In C++

Regula Falsi Method In C++

Regula Falsi Method

C Prrogramme of Regula Falsi Method :

#include<stdio.h>

#include<conio.h>

#include<math.h>

#define esp 0.0001

#define f(x) ((x*x*x)-18)

main()

{

float x0,x1,x2,f1,f2,f0;

int count=1;

do

{

printf("\n Enter the value of x0: ");

scanf("%f",&x0);

}

while(f(x0)>0);

do

{

printf("\n Enter the value of x1: ");

scanf("%f",&x1);

}

while(f(x1)<0);

printf("\n************************************************************ \n");

printf(" n x0\t  x1\t  x2\t  f0\t  f1\t  f2");

printf("\n************************************************************ \n");

do

{

f0=f(x0);

f1=f(x1);

x2=x0-((f0*(x1-x0))/(f1-f0));

f2=f(x2);

printf("\n %d %f %f %f %f %f %f",count,x0,x1,x2,f0,f1,f2);

if(f0*f2<0)

x1=x2;

else

x0=x2;

count++;

}

while(fabs(f2)>esp);

printf("\n************************************************************ \n");

printf("\n\n Approximate Root = %f",x2);

getch();

}

Output Value: