#include<stdio.h>
#include<conio.h>
#include<math.h>
#define E 0.001

float f (float x)
{
    return (cos(x)-(x*exp(x)));
}
void main()
{
    int ctr,temp,ctr1;
    float res,res1;
    int p,NO;
    float X1=0.00,X2=0.00;
    float X3,FX1,FX2,FX3;
    int co[10];
    clrscr();

//For Scanning X1 and X2

    printf("\nEnter the Roots:1::");
    flushall();
    scanf("%f",&X1);

    printf("\nEnter the Roots:2::");
    flushall();
    scanf("%f",&X2);

    ctr1=0;
    clrscr();

    printf("\n==========================================================");
    printf("\nNO\tX1\tFX1\tX2\tFX2\tX3\tFX3");
    printf("\n==========================================================");

    do
    {

        FX1=FX2=FX3=0;
        FX1  = f(X1);
        FX2  = f(X2);


        X3=((X1*FX2)-(X2*FX1))/(FX2-FX1);

        FX3  = f(X3);

        printf("\n%d\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f",ctr1+1,X1,FX1,X2,FX2,X3,FX3);

        X1=X2;
        FX1=FX2;
        X2=X3;
        FX2=FX3;
        ctr1++;
    }while(fabs(FX3)>=E );

    printf("\n\n%.4f",X3);

    getch();
}