Hello World Program in C

First hello world program in c; Through this tutorial, you will learn how to write the first hello world program in c programming language.

How to Make First Hello World Program in C

• Simple Hello World Program In C
• Hello World Program using Functions in C

Simple Hello World Program In C

#include <stdio.h>

int main()
{
    printf("Hello World");
    return 0;
}

Hello World Program using Functions in C

#include 
void hello(){
	printf("Hello World");
}
int main()
{
   //Calling a function here
   hello();
   return 0;
}

Let’s start with a basic introduction of various code statements, which are used in the above C Hello World program; as shown below:

• 1. #include <stdio.h> – This statement tells compiler to include this stdio.h file in the program. This is a standard input output file that contains the definitions of common input output functions such as scanf() and printf(). In the above program we are using printf() function.
• 2. int main() – Here main() is the function name and int is the return type of this function. Every C program must have this function because the execution of program begins with the main() function. The 0 return value of this function represents successful execution of program while the return value 1 represents the unsuccessful execution of program. This is the reason we have return 0; statement at the end of this main function.
• 3. printf("Hello World"); – This function displays the content within double quotes as it is on the screen.
• 4. return 0; – As mentioned above, the value 0 means successful execution of main() function.