text: #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h> //alinea b
  
  void exit_1(){
      printf("Executing handler 1\n");
      
  }
  
  void exit_2(){
      printf("Executing handler 2\n");
      _exit(0); //alinea b
  }
  
  int main(){
      
      atexit(exit_1); 
      atexit(exit_2); 
      printf("Main done!\n");
      return 0;
  }