C function hello that takes an integer argument and prints "Hello!" that many times on separate lines.

Write a function my_der_calc(f,a,b,N,option), with the output as [df,X],where  f(x) is a function that equals x(1-x), a and b are a scalars that represent the 1st and last point of your grid respectively, and Nis an integer that represents the number of grid points, and optionis the string that can take on the text forward, backward or central differencing.  Thus, you are writing a function that can perform forward, backward or central differencing, the choice is determined by the input option Let xbe an array starting at a, ending at b, containing Nevenly spaced elements, and let y be the array f(x) The output argument, df, should be the numerical derivatives computed for xaccording to the method defined by the input argument, option The output argument Xshould be an array that is the same size as df containing the points in xfor which df is valid Remember, the forward difference method “loses” the last point, the backward difference method loses the first point, and the central…

My question is for C programming. Write a complete program by using four helper functions The whole requested parts should be written in one single program. For all the functions, use the same prototype. Do not hard code any value, all the values must be given by the user in the whole code.  The first function is getting a string and prints the given string, use the same given prototype: void myname ( char firstlastname[ ]); when you test the program, you will call the function in the main, the input will be your name ( you will prompt the user) and the functions prints it completely. The second function which you will add to the program will take 3 integer values and return the average all the 3 integer values, use the same prototype which is given here: double ave ( int num1, int num2, int num3); Call the function in the main, ask the user for 3 values. Test case for 3 given values by the user: 3  5  2 The third function will accept an array of numbers and prints it in the reverse…

In C++, m%n is the remainder when the integer m is divided by the integer n. We can define a function to test whether an integer is even as follows: bool even(int k) {   if ( k % 2 == 1 )      return false;   else      return true;} Translate this function into a standard mathematical function specification.

Write a C++ function named dup that makes a copy of a user input C-string and repeats the C-string. For example, if the user inputs "HelloWorld" then it will say "HelloWorldHelloWorld" Dynamically allocate memory *(using new)* for a new C-string large enough to hold the result C-string. It should be the minimum size necessary to store the result C-string. Don't forget room for a null character!   Put the result C-string into the newly allocated memory. It must be a valid, NULL-terminated C-string. Return a pointer to the result string. The function can assume that parameter str points to a valid, NULL-terminated C-string. You can use cstring utility functions like strcpy(), strlen(), etc. if you wish, but you are not required to. Please demonstrate calling this function.   Example: dup("Giants")should return a pointer to a newly-allocated, null-terminated C-string: "GiantsGiants" char* dup(char *str)