Will the iphone 4 fit in iphone 5c cases?

I saw my mom buying iphone 5c cases and I have a white iphone 4

Nope. The iPhone 5 and up is taller by about an inch or so and slimmer.

It'll fit… But not in a good way. The 5c is taller than the 4 so it will not provide proper protection. You'd of course need a 5c case for a 5c.

No! It will not, i have both and there totaly different sizes, the iphone 5 case barely fits on the 5c anyway, so no way will it be even close

Yes, TECHNICALLY it would, but you should not but a 5c case for a 4 or 4s. The 5c is MUCH taller and thinner. It would not fit good in a 5c case, and it would not have proper protection. But the 4 is also thicker so it would have a hard time fitting. But yeah, you could probably smudge a 4 in a 5c case to make it somewhat fit, but you should NOT get a 5c case for an iPhone 4.