7. Write a function that returns the smallest of 3 floating point numbers by passing them to the function by reference (Note: include the function prototype). Objective A review of programming in the Clanguage. Design and run programs in C using - data types, operators, preprocessor directives, variables, scope, control structures (if-then-else, switch, for, while, do-while), arrays, structures, pointers, functions, parameters, pass by value, pass by reference, typedef, memory allocation