biraj bro

#include<stdio.h>
#include<conio.h>
#include<math.h>
#define ESP 0.0001
#define X1(X2,X3) ((5-X2-X3)/2)
#define X2(X1,X3) ((15-3*(X1)-2*(X3))/5)
#define X3(X1,X2) ((8 - 2*(X1) - X2)/4)
main()
{
 double x1=0,x2=0,x3=0,y1,y2,y3;
 int i=0;
 printf("\n__________________________________________\n");
 printf("\n x1\t\t x2\t\t x3\n");
 printf("\n__________________________________________\n");
 printf("\n%f\t%f\t%f",x1,x2,x3);
 do
 {
 y1=X1(x2,x3);
 y2=X2(y1,x3);
 y3=X3(y1,y2);
 if(fabs(y1-x1)<ESP && fabs(y2-x2)<ESP && fabs(y3-x3)<ESP )
 {
 printf("\n__________________________________________\n");
 printf("\n\nx1 = %.3lf",y1);
 printf("\n\nx2 = %.3lf",y2);
 printf("\n\nx3 = %.3lf",y3);
 i = 1;
 }
 else
 {
 x1 = y1;
 x2 = y2;
 x3 = y3;
 printf("\n%f\t%f\t%f",x1,x2,x3);
 }
 }while(i != 1);
getch();
}