[C/C++] Word Count

#include <stdio.h>

int main()
{
    int i;
    int c;
    unsigned char ucAscii[256] = {0};

    while ( (c = getchar()) != EOF )
    {
        if(c >= 0 && c < 256)
        {
            ucAscii[c]++;
        }
    }

    for (i = 0; i < 256; i++)
    {
        printf("(%d|%c):[%d]\n", i, (unsigned char)i, ucAscii[i]);
    }
    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_WORD_NUM 10000

typedef struct _SWord
{
    char m_acWord[BUFSIZ];
    int m_iCount;
}SWord;

SWord g_acWord[MAX_WORD_NUM] = {0};
int g_iWordIndex = 0;

int main()
{
    int i;
    int bExists;
    char acWord[BUFSIZ] = {0};
    while (scanf("%s", acWord) != EOF)
    {
        bExists = 0;
        for (i = 0; i < g_iWordIndex; i++)
        {
            if(strcmp(g_acWord[i].m_acWord, acWord) == 0)
            {
                bExists = 1;
                g_acWord[i].m_iCount++;
                break;
            }
        }

        if(!bExists)
        {
            strncpy(g_acWord[g_iWordIndex].m_acWord, acWord, BUFSIZ);
            g_acWord[g_iWordIndex].m_iCount = 1;
            g_iWordIndex++;
        }
    }

    for (i = 0; i < g_iWordIndex; i++)
    {
        printf("%s:[%d]\n", g_acWord[i].m_acWord, g_acWord[i].m_iCount);
    }
    return 0;
}

#include <iostream>
#include <string>
#include <map>
#include <stdio.h>

using namespace std;

int main()
{
    char acWord[BUFSIZ] = {0};
    map<string, int> wordmap;
    while (scanf("%s", acWord) != EOF)
    {
        string strWord = acWord;
        map<string, int>::iterator iter = wordmap.find(strWord);
        if(iter == wordmap.end())
        {
            wordmap.insert( std::pair<string, int>(strWord, 1) );
        }
        else
        {
            iter->second++;
        }
    }


    map<string, int>::iterator iter = wordmap.begin();
    while (iter != wordmap.end())
    {
        printf("%s[%d]\n", const_cast<char*>(iter->first.c_str()), iter->second);
        ++iter;
    }

    return 0;
}