when different data types are used in a c++ expression like : a + b – c * d [duplicate]

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• Implicit type conversion rules in C++ operators 9 answers

what will the data type of the following code:

std::cout<<a + b – c * d

If the types of a, b, c, and d are int, long int, float, and double respectively, then the type of the expression is:(i.e what will be the data type in the end)

eg: int, long int, float double.