This can program primarily test how advanced concurrent server programs write to avoid zombie processes?

#include <unistd.h>#include<stdio.h>#include<stdlib.h>#include<signal.h>intMainvoid)  {  //signal (SIGCHLD, sig_ign);   intI=0; printf ("i son/pa ppid pid fpid\n"); //Ppid refers to the parent process PID of the current process//PID refers to the PID of the current process,//fpid refers to the value that the fork returns to the current process    while(1) {Sleep (1); //The reason to join this time is because, easy to see the changes in the program, or can not see the changes, even the mouse can not understand! pid_t fpid=Fork (); if(fpid==0) {printf ("%d child%4d%4d%4d\n", I,getppid (), Getpid (), fpid); //return 0;//These two effects are the same! Exit0); }          }  return 0; } [[email protected] desktop]# gcc b.c[[email protected] desktop]#./A. outI son/PA ppid pid fpid0Child16980 16981    00Child16980 16982    00Child16980 16983    00Child16980 16985    00Child16980 16988    00Child16980 16990    00Child16980 16991    00Child16980 16993    00Child16980 16995    00Child16980 16996    0^C[[email protected] desktop]# [[email protected] desktop]# PS aux| Grep-w'Z' //have spawned a lot of zombie processes Root16981  0.0  0.0      0     0pts/2z+ -: -   0:xx[A. out] <defunct>Root16982  0.0  0.0      0     0pts/2z+ -: -   0:xx[A. out] <defunct>Root16983  0.0  0.0      0     0pts/2z+ -: -   0:xx[A. out] <defunct>Root16985  0.0  0.0      0     0pts/2z+ -: -   0:xx[A. out] <defunct>Root16987  0.0  0.0   4340   804pts/3S+ -: -   0:xxgrep-w z[[email protected] desktop]# when putting signal (SIGCHLD, sig_ign); This line of code adds the following output:[[email protected] desktop]# gcc B.c[[email protected] desktop]#./A. outI son/PA ppid pid fpid0Child17135 17136    00Child17135 17137    00Child17135 17139    00Child17135 17140    00Child17135 17141    00Child17135 17142    00Child17135 17145    00Child17135 17147    00Child17135 17150    00Child17135 17151    00Child17135 17152    0^C[[email protected] desktop]# //No zombie process generated [[email protected] desktop]# PS aux| Grep-w'Z'Root17144  0.0  0.0   4336   796pts/3S+ -: the   0:xxgrep-w z[[email protected] desktop]# PS aux| Grep-w'Z'Root17149  0.0  0.0   4336   792pts/3S+ -: the   0:xxgrep-w z[[email protected] desktop]#

This can program primarily test how advanced concurrent server programs write to avoid zombie processes?