6. Write a program that contains a main function, a "double custom_operator function nt op type, double x, double y)", a "double min(double,double)", a double max(double x,double y), and a double pow(double x, int y). The main function is used to call the custom operator function. Next, the custom operator function calls the min/max/pow functions based on the op_ type. From the main, call the custom operator function with the three inputs 1/-3/5, 2/4/5, and 3/4/5. Print the result of each input to screen. i) The custom operator function calls the "min", "max", or "pow" function based on the value of the parameter op_type (1-min), (2-max), (3-pow) and returns the result of the called function. The arguments passed to the min/max/pow function are the parameters x and y. ii) Do not use the min, max, and pow functions from the math library usng C Pro gram