Language: C++ Consider the abs function, which determines the absolute values of a real number. The function returns the following values: |abs(x) = { -x for x < 0, x for x0. Write a function which determines and returns the absolute values of a float parameter. Then write a main() function which calls the function from above and prints on the screen the re- turned value. You may not use any library functions related to the absolute value. You can assume that the input will be valid.