Write in c++ and has to be used to gtest.

Problem 5: Write a function named as mutliplyBy2AndSum that takes array of type double and its size of type integer as function parameters. You are required to multiply each value of a double type array with 2 using pointer notation, store on the same index and return the sum of all values as double type. Hint: double *p in function parameter is used to store the starting address of array Input: 8.0, 5.0, 12.0, 14.0, 9.03 Output: 96.0