Complete the following TODO sections of this C code     // TODO: Spawn a child process   ??? = ???;   // CHILD CODE   // TODO: Conditional for child only   if( ??? ){...}   // PARENT CODE   printf("Parent waiting for child to complete\n");   int status;                           // used to check return code of child   // TODO: Block until child is finished and check the output   ???? ( ??? );   // TODO: check if the child exited properly using wait macros   if( ??? ){     // TODO: extract exit/return code of child process using wait macros     int retcode = ???;     printf("Child complete, return code %d\n",retcode);   }   else{                                        // Child did not complete properly     printf("Child terminated abnormally\n");     exit(1);   }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Complete the following TODO sections of this C code
 

  // TODO: Spawn a child process
  ??? = ???;

  // CHILD CODE
  // TODO: Conditional for child only
  if( ??? ){...}

  // PARENT CODE
  printf("Parent waiting for child to complete\n");
  int status;                           // used to check return code of child

  // TODO: Block until child is finished and check the output
  ???? ( ??? );


  // TODO: check if the child exited properly using wait macros
  if( ??? ){

    // TODO: extract exit/return code of child process using wait macros
    int retcode = ???;

    printf("Child complete, return code %d\n",retcode);
  }
  else{                                        // Child did not complete properly
    printf("Child terminated abnormally\n");
    exit(1);
  }
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