Consider the following function prototypes: (30)int func1(int, double);double func2(string, int, double);char func3(int, int, double, char);string join (string, string);Answer the following questions:a. How many parameters does the function func1 have? What is the type of the functionfunc1?b. How many parameters does function func2 have? What is the type of function func2?c. How many parameters does function func3 have? What is the type of function func3?d. How many parameters does function join have? What is the type of function join?e. How many actual parameters are needed to call the function func1? What is the type of eachactual parameter, and in what order should you use these parameters in a call to the functionfunc1?f. Write a C++ statement that prints the value returned by the function func1 with the actualparameters 3 and 8.5.g. Write a C++ statement that prints the value returned by function join with the actualparameters "John" and "Project Manager", respectively. h. Write a C++ statement that prints the next character returned by function func3. (Use yourown actual parameters.)