In C program we use printf keyword to display the output value.
// Simple Hello World program in C.
#include <stdio.h>
int main()
{
// printf() is a output function which prints, the passed string in the output console.
printf("Hello, World!");
return 0;
}
OUTPUT → Hello, World!
EXPLANATION ABOUT THE CODE
- First, We have included a stdio.h header file, it enables us to use standard input/output functions in our C Program.
- If we do not include the stdio.h header file in our program, we can not use input / output functions like printf() and scanf().
- main() function is the main block of code where the execution of our program begins.
- Inside the main() function we have two statements, printf("Hello, World!") and return 0.
- printf() function is used to display the string inside it into the output window.
- printf("Hello, World!") will print Hello, World! (without quotes "") in the output window.
- return 0 will return 0 to the operating system and shows that execution went successfully without any errors. This is the last statement of every program.
- main() function is supposed to return a value to the OS and after returning some value, the program finishes its execution.
NOTE :- printf() function returns the length of the string passed into it for printing in the output console.
