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In C++, use the `std::fixed` and `std::setprecision` functions (defined in the `<iomanip>` header file) to preserve two decimal places in the output. `std::fixed` sets the output format to a fixed decimal point format, while `std::setprecision(2)` specifies keeping two decimal places. If you want to know more about C++, you can read the articles below this topic.
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