{"id":11693,"date":"2023-01-16T12:06:24","date_gmt":"2023-01-16T12:06:24","guid":{"rendered":"https:\/\/www.prepbytes.com\/blog\/?p=11693"},"modified":"2023-07-13T07:16:48","modified_gmt":"2023-07-13T07:16:48","slug":"structure-of-c-program-with-example","status":"publish","type":"post","link":"https:\/\/prepbytes.com\/blog\/structure-of-c-program-with-example\/","title":{"rendered":"Structure of C Program with Example"},"content":{"rendered":"

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A structured approach is used in a C program, which includes preprocessor directives, function declarations, global variable declarations, and the main function. Preprocessor directives deal with header files and macros, whereas function declarations define the functions that will be used in the program. The main function serves as the entry point, and global variable declarations define shared variables. Understanding this structure aids in the creation of well-organized and efficient C programs. In this article, we will go over each component with examples to help you write well-structured code.<\/p>\n

Basic Structure of C Program<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Section<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
Documentation<\/td>\nIncludes the program’s description, the programmer’s name, and the creation date. The majority of these are written as comments.<\/td>\n<\/tr>\n
Link<\/td>\nIncludes the program’s description, the programmer’s name, and the creation date. The majority of these are written as comments.<\/td>\n<\/tr>\n
Definition<\/td>\npreprocessor directive that contains symbolic constants is included. For instance, #define enables the usage of constants in our code. In the code, it substitutes its value for each constant.<\/td>\n<\/tr>\n
Global Declaration<\/td>\nIncludes the declaration of functions, static global variables, and global variable declarations.<\/td>\n<\/tr>\n
Main() Function<\/td>\nEvery C program’s main() function serves as the starting point for execution. A main() function must be present in every C program.<\/td>\n<\/tr>\n
Subprograms<\/td>\nAll user-defined methods should be included (functions the user provides). Both built-in functions and function definitions specified in the Global Declaration section may be included there. The main() method is what is used for them.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

In order to comprehend the structure of a C program, let’s look at an example:<\/p>\n

Example: Write a program to calculate our age.<\/h3>\n

In the following example, we’ll calculate age concerning a year.<\/p>\n

Let’s implement this and check:<\/p>\n

Code: \t\t\t\t\t\t