In C language/ C code

4. Copy and paste the prog4.c template 5. Change the header comment so that it has your name, date, and a description of the proga build run and test, the outline code should compile and execute 6. The first function you will implement will be the Greeting function Create the function definition (block of code)below the main function .Inside this function use printf statements to display your Greeting message to the use * build run and test Now it is time to test the Greeting function with a function call Write the statement to call the greeting function from inside the main function 7. 8. s* build run and test 9 The next function we will implement is the Get Letter function Create the function definition below the main function Inside this function you will need to declare a character .Ask and get the character from the user .Return the character build run and test 10. Now it is time to test the Getletter function with a function call 11. Declare a character in the main functiorn 12. Write the statement to call the Get Letter function from the main function 13, Use a printf statement to display the character that was returned form the Getletter function *build run and test S, 11. Declare a character in the main function 12. Write the statement to call the Getletter function from the main function 13. Use a printf statement to display the character that was returned form the GetLetter funct build run and test 14. Repeat steps 8 through 11 THREE more times for a total of 4 character values build run and test 15. The next function to implement is the CalculateSum function Create the function definition below the main function Inside this function you will need to declare 3 integers . (1)numl, (2)num2, (3) sum Find and print the 2 numerical values of argl and arg2 Calculate and retum the sum build run and test 16. Now it is time to test the CalculateSum function with a function call You will call the CalculateSum function twiee and print the results in the main function build run and test BEFORE SI BMITTNG THE CODE