Zółwie są spoko

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/types.h>

int main(int argc, char *argv[])
{
	int status;
	if(argc!=2)
	{
		fprintf(stderr,"Error1\n");
		exit(1);
	}
	int length=strlen(argv[1]);
	if(length>20)
	{
		fprintf(stderr,"Error2\n");
		exit(1);
	}
	if (length%2==0)
	{
		char *tab1 [length/2];
		char *tab2 [length/2];
		//printf("Jestem tu 1\n");
		strncpy(tab1,argv[1],length/2);
		strncpy(tab2,argv[1]+length/2,length/2);
		//printf("%s\n",tab1);
		//printf("%s\n",tab2);

		//Pierwszy potomek
		pid_t cpid = fork();
		if (cpid>0)
		{
			//Drugi potomek
			pid_t ccpid = fork();
			if (ccpid>0)
			{
				waitpid(cpid,&status,0);
				int exitstatus1=WEXITSTATUS(status);
				waitpid(ccpid,&status,0);
				int exitstatus2=WEXITSTATUS(status);
				int pid = getpid();
				if (cpid>0)
				printf("%d\t%d\t%s\t%c\n",pid,cpid,tab1,exitstatus1);
				if (ccpid>0)
				printf("%d\t%d\t%s\t%c\n",pid,ccpid,tab2,exitstatus2);
				if (exitstatus1>exitstatus2)
				return exitstatus1;
				if (exitstatus1<exitstatus2)
				return exitstatus2;
			}
			else
			{
				int exec2 = execlp(argv[0],argv[0],tab2,NULL);
				printf("exec2=%d\n",exec2);
			}
		}
		else
		{
			int exec1 = execlp(argv[0],argv[0],tab1,NULL);
			printf("exec1=%d\n",exec1);
		}

	}
	if (length%2==1)
	{
		if (length==1)
		{
			return *argv[1];
		}
		char tab1[length/2];
		char tab2[length/2+1];
		//printf("Jestem tu 2\n");
		strncpy(tab1,argv[1],length/2);
		strncpy(tab2,argv[1]+length/2,length/2+1);
		//printf("%s\n",tab1);
		//printf("%s\n",tab2);

		//Pierwszy potomek
		pid_t cpid = fork();
		if (cpid>0)
		{
			//Drugi potomek
			pid_t ccpid = fork();
			if (ccpid>0)
			{
				waitpid(cpid,&status,0);
				int exitstatus1=WEXITSTATUS(status);
				waitpid(ccpid,&status,0);
				int exitstatus2=WEXITSTATUS(status);
				int pid = getpid();
				if (cpid>0)
				printf("%d\t%d\t%s\t%c\n",pid,cpid,tab1,exitstatus1);
				if (ccpid>0)
				printf("%d\t%d\t%s\t%c\n",pid,ccpid,tab2,exitstatus2);
				if (exitstatus1>exitstatus2)
				return exitstatus1;
				if (exitstatus1<exitstatus2)
				return exitstatus2;
			}
			else
			{
				int exec2 = execlp(argv[0],argv[0],tab2,NULL);
				printf("exec2=%d\n",exec2);
			}
		}
		else
		{
			int exec1 = execlp(argv[0],argv[0],tab1,NULL);
			printf("exec1=%d\n",exec1);
		}
	}
}