C++ Output question

Question

#include <iostream>
using namespace std;
int main() {
float x = 0.1;
if (x == 0.1)
cout<<"IF";
else if (x == 0.1f)
cout<<"ELSE IF";
else
cout<<"ELSE";
system("pause");
return 0;
}
In this question why answer is ELSE IF? Who can explain?