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How to write C “Hello, World!” Program with Definition


C Hello World Program – In this example, you will learn to print first program on the screen in C programming. To understand this example, you should have the knowledge of the following C programming topics:

C Input Output (I/O) –

Program to Display “Hello, World!”

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#include <stdio.h>
int main() {
   // printf() displays the string inside quotation
   printf("Hello, World!");
   return 0;


Hello, World!

  • How this programs works?
  • The #include is a preprocessor command that tells the compiler to include the contents of stdio.h (standard input and output) file in the program.
  • The stdio.h file contains functions such as scanf() and printf() to take input and display output respectively.
  • If you use the printf() function without writing #include , the program will not compile.
  • The execution of a C program starts from the main() function.
  • printf() is a library function to send formatted output to the screen. In this program, printf() displays Hello, World! text on the screen.
  • The return 0; statement is the “Exit status” of the program. In simple terms, the program ends with this statement.

Types of Sorting Algorithms:

Additional Reading


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