“Hello World” program in C

This is just to give you a small example of a program in C programming. This is just a small traditional Hello World program. You can learn all things step by step.

# include <stdio.h>
 int main() { 
// printf() displays the string inside quotation 
printf("hello world"); 
return 0; 
}

Output

hello world

How program works in C?

• #include includes the input output library functions and they are also known as a header file.
• # are the indicates as a Preprocessor directive.
• int main() The main() function are define as a entry point of every function in c language.
• Printf() printf() functions is used to print data on the console.
• The next line return 0, terminates the main() function and returns the value 0.

Compile and Run the C program

Here we can see how to save the code and how to compile and run it.

There are two ways to compile and run the code.

• First By Menu
  • Open the text editor and add the code.
  • Save the file as hello.c.
  • Now click on the Compiler menu then click sub menu to compiler the c program.
  • Then click on the run menu then click sub menu to run the c program.
• Second By Shortcuts
  • You can press the alt+f9 keys compile the program directly.
  • You can press the ctrl+f9 keys run the program directly.