What is expected according to logic is not in the output

[Shiv15072001]

Bug report

OS information

windows 10

VS CODE with c extension gcc version 6.3.0 and online c compiler.

Steps to reproduce

#include<stdio.h>

int main(){

float a[5] = {10.4,44.4,556.55,33.43,55.33};
float *ptr1 = &a[0];
float *ptr2 = ptr1 + 3;

printf("%f\n", *ptr2);
printf("%f", (int)(ptr2 - ptr1));
return 0;

}

More resources

Expected ouput is:-
33.430000
3.0000000

Actual output is:-
33.430000
33.429993

Possible fix

i can't find possible fix