IF statements evaluates incorrectly [duplicate]

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• Is floating point math broken? 18 answers

#include <stdio.h>
#include <math.h>

int main(){
  double t1,t2,v;
  t1 = 147.81;
  t2 = 147.80;
  printf("Value of absolute value of t1-t2 is %lf\n", fabs(t1-t2));
  if(fabs(t1-t2) < 0.010000){
    printf("Points are same.\n");
  }
  else printf("Points are different.\n");
  v=fabs(t1-t2);
  printf("Value of v is %lf\n", v);
  if(v < 0.010000){
    printf("True1\n");
  }
  else printf("False1\n");
  if(0.010000 < 0.010000){
    printf("True2\n");
  }
  else printf("False2\n");
  }

I am trying to compare two real numbers(i will use this in program that compares values of x or y coordinates of two different points). That is i want my program to print that two number are same if they differ by less than 0.1. However it seems that my program evaluates fist two if statements incorrectly. When i run this program i get:

Value of absolute value of t1-t2 is 0.010000
Points are same.
Value of v is 0.010000
True1
False2