Compose a single C++ programming statement that will declare the variable named hour to be integer (int) data type with an initial value of 23. 2. The formula for calculating the area of a right triangle is: = 1 2 ( ) Convert the above algebraic expression for calculating the area of a right triangle to an equivalent C++ programming statement that works correctly. 3. Compose the C++ code that will declare a double variable named energy to have an initial value of 34,220.76584. Assume that your code already includes the header. Use your knowledge of formatting to compose additional C++ programming statements that will display the value of the variable named energy in such a way that it displays 3 digits after the decimal point. (Your code should not display the value using scientific notation.)