Submit two C++ files: 1. Write a C++ program that declares an array alpha of50 components of type double. Initialize the array so that thefirst 25 components are equal to the square of the index variable,and the last 25 components are equal to three times the indexvariable. Output the array so that 10 elements per line areprinted. 2. Write a program that prompts the user to input astring and outputs the string in uppercase letters. (Use acharacter array to store the string.) . . .