PROGRAM FOR REGULA FALSI

/*PROGRAM FOR REGULA FALSI*/

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

float x0,x1,x2,e;

int n,i,g=0;

float f(float);

clrscr();

printf("\n enter the value of x0,x1,e,n:\n");

scanf("%f%f%f%d",&x0,&x1,&e,&n);

if((f(x0)*f(x1)<0)

{

for(i=1;i<=n;i++)

{

x2=(x0*f(x1)-x1*f(x0)/(f(x1)-f(x0));

}

if(fabs(f(x2))<e)

{

g=1;

break;

}

if(f(x2)*f(x0)<0)

x1=x2;

else

{

x0=x2;

printf("Iteration: %f\n",x2);

}

 }

 }

 if(g==0)

 printf("\n Root does not found in n iteration upto desired accuracy");

 else

 printf("\n ANSWER:Root=%f",x2);

 getch();

 }

 float f(float x)

 {

 return(x*x*x-2*x-5);

 }

 /****************************OUTPUT*************************/

 Enter the value of x0,x1,e,n:

 1

 3

 .000006

 80

 Iteration:1.545455

 Iteration:1.859163

 Iteration:2.002119

 Iteration:2.059644

 Iteration:2.081572

 Iteration:2.089974

 Iteration:2.092782

 Iteration:2.093899

 Iteration:2.094311

 Iteration:2.094463

 Iteration:2.094519

 Iteration:2.094539

 Iteration:2.094547

 Iteration:2.094550

 Iteration:2.094551

 ANSWER ROOT IS=2.094551*/