write a program to print hello world in c
Here is a simple program to display hello world in c using the simple steps and comments for you to easily understand the code in a few lines. So all you want is to display the message “Hello World” on the screen. Let us now look at the program:
#include <stdio.h> int main() { // printf() displays the string written inside quotation. printf("Hello, World!"); return 0; }
Output
Hello, World!
How “Hello, World!” program in c works?
- The
#include <stdio.h>
is a preprocessor command. This command tells the compiler to include the contents ofstdio.h
(standard input and output) file in the program.
Thestdio.h
file contains functions such asscanf()
andprint()
to take input and display output respectively.
If you useprintf()
function without writing#include <stdio.h>
, the program will not be compiled. - The execution of a C program starts from the
main()
function. - The
printf()
is a library function to send formatted output to the screen. In this program, theprintf()
displays Hello, World! text on the screen.