programming language c

Write the C codes to perform the following tasks: (a) Assigning a value 3.67 to a constant named pHValue using #define preprocessor directive. [1 mark] (b) Function definition header of a programmer-defined function named CalculateGAP that takes two double-precision floating-point parameters, gm and qty, and returns a double-precision floating-point result [2 marks] (a) Display the value of the seventh element of character array named TYPE [2 marks]