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// Preprocessor Directives #include <stdio.h> // Include standard input-output library // Global Variables and Constants (Optional) #define MAX_SIZE 100 // Function Prototypes (Optional) void myFunction(int); // Main Function int main() { // Variable Declarations int num; // Statements printf("Enter a number: "); scanf("%d", &num); // Function Calls myFunction(num); // Return Statement return 0; } // Function Definitions void myFunction(int x) { // Function Body printf("The number entered is: %d\n", x); }
A typical C program follows a structured format. It starts with preprocessor directives, including header files and macro definitions. Next comes the main function, where execution begins. Within main, variables are declared, and statements are written to define program logic. Functions may be declared before or after main, containing reusable code segments. Comments enhance code readability and document its purpose. Finally, the program returns an integer value to the operating system via the return statement at the end of main. This structured layout facilitates organization and maintenance of C programs.
The basic structure of c programme is divided into 6 parts which makes easy to read,modify, document nd understand .
6 parts are
Documentation
Preprocessor section
Definition
Global declaration
Main() function
Sub programs
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