C++ program to

1-Write a program to read a set of integer values from the keyboard.Your program should

Determine whether the input integer is positive, negative or zero.

Add the number of each group (positive, negative, or zero).

Calculatesum of each group

Calculate each average of each group

Print the results of items a through d above.

2- C++ program to Write a program to read a set of characters (letters, digits, or special characters) from the keyboard and add 3 to each input value.This is called Caesar Cipher.Print the resulting cipher values.

3- C++ program to

Write a program to determine roots of a quadratic equation.Print the roots.Remember, an equation may have 2 roots, one root, or no root.Consider every possibilities (such whether a =0, or b= 0, or c= 0)