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C++

doubleIt is a function that takes one argument and returns no value. The argument is a pointer to int. The function doubles the value that the argument points to and stores it back. savings is an int variable that has been declared and initialized. Write a statement that doubles the value stored in savings by invoking the function doubleIt. For example, if the value in savings was 7 before your statement, after your statement its value would be 14.