Please help asap I need it to be in C code thank you!! :)

a) Given both function prototypes, write two functions to demonstrate how each function works. Use comments in the code to explain the code functionality and any assumptions made about struct template. float volume_cube (float x, float y, float z); void print_codes (struct points x_Y_z_points[], int n); b) Given both macro definitions statements, write a small program to demonstrate how each macro works. Use comments in the code to explain the code functionality. #define SCALE FACTOR (5.0f / 9.0f) #define EN (n) ((n) %2==0) c) Using the following structure templates, create an instance of gear called data[3] and populate and print the contents on to the screen. struct gear{ //template char label [10]; float ratio; }