1. Write a c++ code that takes two integer numbers as inputs, then adds them using a function called add(x,y), then subtracts them using a function called subtract(x,y), and outputs the results in an understandable way.

Write a C++ program with two user defined functions. The first function named "functionWithArray" takes two user input arguments of character types and return True if first argument is smaller than the second argument (alphabetically) and returns False otherwise. Write the second function named "functionWithPointers" which behaves like the first functions but uses pointers to receive the arguments. You may assume that both character arrays contain only lower-case letters, and no blanks or other non- alphabetic characters. Write a suitable Main function to test these two functions. Sample Output: Enter First String: C++Programming Enter Second String: JavaProgramming According to functionWithArrays: 'c++programming' is smaller than 'javaprogramming'. According to functionWithPointers: 'c++programming' is smaller than 'javaprogramming'.

In C++

Define an user defined C++ function to find out the average of four integer numbers. The function should take the values those are passed as parameters and returns the average to the main function. Sample input: Enter four integers: 10 20 30 42 Average: 25.50