Engineers often measure the ratio of two power measurements in decibels, or dB, which can be calculated as follows: dB= log10P2/P1 Where P2 is the power level being measured, and P1 is some reference power level. Write a c++ programe contain function that calculates the level. The function’s prototype is as follows: double dBCalculator (double P1, double P2); Then, call dBCalculator from the main function to find the power ratio for the measurements from 1 to 20 Watts, in 2 Watt steps. You can assume that the reference power P1 is 1 Watt.

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