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Hello World program in C language
C Language
Publish Date: April, 25-2019
The "Hello World" Program in C
The intent of your code snippet:
C
#include #include void main() { printf("Hello World !"); }
Standard C Code
For a modern C compiler, the most accurate and standardized way to write this program is:
C
#include <stdio.h>
int main() {
printf("Hello World !");
return 0; // Indicates successful execution
}
Code Explanation
-
#include <stdio.h>-
This line is a preprocessor directive. It tells the compiler to include the contents of the standard input/output library (
stdio.h). -
This library contains the definition for the
printf()function, which is necessary to display output on the console.
-
-
int main() { ... }-
This is the main function where the program execution begins.
-
intindicates that the function will return an integer value. -
The use of
void main()is often accepted by older compilers but is non-standard in modern C.
-
-
printf("Hello World !");-
This is the core command. The
printffunction prints the text string enclosed in the double quotes (" ") to the console (or standard output). -
The semicolon (
;) marks the end of the statement.
-
-
return 0;-
This is a standard practice within the
int main()function. -
It tells the operating system that the program has executed successfully.
-
Output:
Hello World !
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