_Exit - Exit program without using exit() function in C

Exit Program without using exit() function:
There was a special function called _Exit(0) in-order to terminate the current process suspiciously.
The _Exit function terminates without calling the functions registered with the atexit function, and may or may not perform the other actions listed. Both functions make the low-order eight bits of the status argument available to a parent process which has called a wait-family function.

int _Exit(int return_code);

//Exit Program without using exit() function
#include <stdlib.h>
#include <stdio.h>

int main()
  int a=-1;
//printf("Exit Program without using exit() function");

    return 0;