A. Declaring, Initializing, and Printing Variables The following program contains missing code. Specifically, you are to fill in the missing code as directed below: Declare variable varl as an integer, var2 as a character, and var3 and var4 as floating point numbers, but do not initialize these variables yet. Next, assign 25 as the value of vari. Then, assign var2 to be the uppercase first letter of your last name. Now, assign var3 to be the floating-point number 2.5. Finally, seeing as the var4 contains the result of an arithmetic expression, print out the result of var4 to the terminal. Be sure to print a newline after the result. . #include using namespace std; int main() { /* Declare variables vari - var4 as directed, but do not initialize these variables here */ // Initialize variables vari - var3 as directed 1/ Compute result and store in var4 already done var4 = var3 + var2 & vari; /* Print out the value of var4 variable, as well as add a newline after */ return ; } Complete the missing code and save the file Lab3A.cpp, making sure it compiles and check your result that is output to the screen, making sure the operation result is correct. Note that you will submit this file to Canvas