Find the error in each of the following program segments and explain how to correct it:a) double cube(float); // function prototypecube(float number) // function definition{return number * number * number;}b) int randomNumber = srand();c) double y = 123.45678;int x;x = y;printf("%f\n", (double) x);

Complete the C++ function given below:

1.Please use recursive function principle and use Visual Studio or Xcode to create a function called: f (int n), which will be calculated based on following formula: f (n) = [1+f (n-1)] *2 f (0) = 0 2. Please design another function called fibonacci function: fibonacci (int n), which will be calculated based on following formula: fibonacci ( int n) = fibonacci (n-1) + fibonacci (n-2) fibonacci (0) = 0 fibonacci (1)=1 3. Please copy and paste your source code here. You don't need to compile and execute your source code. The format will be like: #include <iostream> #include <cmath> using namespace std; int f ( int n) { } int fibonacci ( int n) { }

Write three void functions: Input three numbers, sort the three numbers, display the three numbers. Write a main program to test the functions.    void input (int  &a,  int &b, int &c);    void sort3 (int  &a,  int &b, int &c);    void display (int  a,  int b,  int c);