#include <stdio.h> // stdio.h header file for standard input output.
int main() // c program execution start from main function,
{
printf("Hello, World!\n"); // printf is a function defined in stdio.h header file.
return 0; // return 0 indicate successful execution .
}
int main() // c program execution start from main function,
{
printf("Hello, World!\n"); // printf is a function defined in stdio.h header file.
return 0; // return 0 indicate successful execution .
}
In the above C program stdio.h is a header file where all the standard library functions are written by the C Programmers here 'std' stands for standard and 'io' stands for input output, so in this stdio.h header file all the input-output related code is pre-written here.
Next we have the 'int main(){ }' it is a most important and compulsory part of a c program because main function is the point from where the execution of the program started. 'int ' before the main is its return type and int stands for integer.
Printf is a predefined function in stdio.h and works for standard output on the screen.
return 0, Indicate successful execution of the program, the main function can return two value either 0 indicating success or -1 indicating failure.
Comment : If having Doubt.
