Программы c++ (сортировка, хэширование) / 3 / old1 / hc

#include <iostream>
#include <string.h>
#include <iomanip>
#include <stdlib.h>
#include <limits>

#define N 20
#define MaxStrLen 7
#define Ns 8

using namespace std;

char st[N][MaxStrLen];
int ht[N], key;

int hash_calc_sv2(char x[])
{
	int StringLength,HashKey,i,tmp;
	StringLength=strlen(x);
	HashKey=0;
	if (StringLength%2==0) //Чётный случай
	{
		for (i=0; i<StringLength; i=i+2)
		{
			tmp=x[i];
			tmp=tmp*1000;
			tmp=tmp+x[i+1];
			HashKey=HashKey+tmp;
		}
	}
	if (StringLength%2!=0) //Нечётный случай
	{
		for (i=1; i<StringLength; i=i+2)
		{
			tmp=x[i];
			tmp=tmp*1000;
			tmp=tmp+x[i+1];
			HashKey=HashKey+tmp;
		}
		HashKey=HashKey+x[0];
	}
	return (HashKey);
}


int hash_calc(char x[])
{
	int StringLength,HashKey,i;
	StringLength=strlen(x);
	HashKey=0;
	for (i=0; i<=StringLength; i++) {HashKey=HashKey+x[i];}
	return (HashKey);
}

int main(void)
{
	strcpy(st[0],"asfx");
	//key=hash_calc_sv2(st[0])%20;
	key=hash_calc(st[0])%19;
	cout<<key;
}