a basic example of parent/child that creates zombies and a race condition

basic_parent_child_fork.c

#include  <stdio.h>
#include  <sys/types.h>
void  child(int*);
int  parent(int);
void  main(void)
{
	pid_t  pid;
	int n=0, i=0;
	do {
		if (pid == 0) 
			child(&i);
		else 
			n = parent(n);
		pid = fork();
	}while(n!=i);
}
void  child(int* n) {
	printf("KID]\tgot  %d\n", *n);
	printf("KID]\tsays %d+2 = %d\n", *n, *n+2);
	*n+=2;
	kill(getpid(),9);//child kills itself but makes a ZOMBIE!!! arr
}
int  parent(int p) {
	int n;
	printf("PARENT] enter a #  \t\t End = 0\n");
	scanf("%d",&n);
	return n;
}