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Asked: 2026-05-20T09:32:24+00:00

I’ve seen code where people initialize float variables like this: float num = 0.0f;

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I’ve seen code where people initialize float variables like this:

float num = 0.0f;

Is there a significant difference between this and just doing the following below?

float num = 0;

Thanks.. 🙂

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1 Answer

  1. Editorial Team

    float x = 0 has an implicit typecast from int to float.
    float x = 0.0f does not have such a typecast.
    float x = 0.0 has an implicit typecast from double to float.

    Depending on the compiler, implicit typecast can require the compiler to generate extra code.

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