Float and double comparison (==). Here f is float and 1.25 is double how they can be equal?

Question

int main()
{
float f = 1.30;
int i=5;
while(i--)
{
f = f - 0.01;
}
if(1.25 == f)
printf("True ");
else
printf("False");
return 0;
}
Answers
1. Infinite Loop
2. No Output
3. False
4. True

Answer 1

They don't equal. But there it is compared values not the types in c. In any calculation of instruction, the operands are first converted or upcasted to higher types , then calculation is evaluated.

So both double type values are compared but may or may not equal, because of fraction part differences..

Answer 2

The answer is True I don't know why. They should not be equal