Answer 1

1. DOCUMENTATION SECTION : Tells what the program is all about (simply, comments). Further, It helps as a reference.
2. PREPROCESSOR DIRECTIVES/LINK SECTION : which includes the header files.
3. DEFINITION SECTION : used to define all symbolic constants.
4. GLOBAL VARIABLES DECLARATION : Where we declare the global variables.
5. MAIN FUNCTION b which is the entry point of any program in C
a) LOCAL VARIABLE DECLARATION SECTION
b) BODY OF MAIN
6. FUNCTION DEFINITION SECTION

This is the structure of C program.

Answer 2

Thanks Martin Taylor 😊👍