BASIC STRUCTURE OF C PROGRAM 2

MAIN FUNCTION SECTION

• All the C program contains one or more functions but, there must always be one main() 
• Execution of every C program begins from the function main() 
• This section contains 2 parts :

1. Declaration part - Declares all the variables used in the executable part.
2. Executable part

• These two parts must be within the opening and closing braces ({ and })
• Program execution starts from the opening brace and ends at the closing brace
• All the statements in the declaration part & executable part must end with a semicolon

SUB - PROGRAM SECTION

• This section contains the user defined functions.
• These functions are invoked in the main function.
• We can have any number of our own functions
• These functions are generally placed after the main function, although they may appear in any order.
• These functions are executed only when we invoke these functions