Write a complete C++ program that will calculate the voltage gain for an amplifier using a function named calculateGain(). 275 voltage gain = [23 +0.5 In the main() function, prompt the user to input f, the frequency in Hz (data type: double) and n, the number of stages in the amplifier (data type: int). Then, call function calculateGain() and pass in the variables required to calculate the voltage gain according to the formula given above. The calculate Gain() function will calculate and return the voltage gain. The main() function then print the voltage gain with a precision of 3 decimal places excluding the decimal point. All #include and namespace statements must be present. Write your answer in the text box below.