C++实现查找汉字拼音首字母

#include <iostream>
#include <string>
using namespace std;

static char convert(wchar_t n);
static bool In(wchar_t start, wchar_t end, wchar_t code);

int main(int argc, char* argv[])
{
string sChinese = "我爱中国"; // 输入的字符串

char chr[3];
wchar_t wchr = 0;

char* buff = new char[sChinese.length()/2];
memset(buff, 0x00, sizeof(char)*sChinese.length()/2+1);

for (int i = 0, j = 0; i < (sChinese.length()/2); ++i)
{
memset(chr, 0x00, sizeof(chr));
chr[0] = sChinese[j++];
chr[1] = sChinese[j++];
chr[2] = '\0';

// 单个字符的编码 如：'我' = 0xced2
wchr = 0;
wchr = (chr[0] & 0xff) << 8;
wchr |= (chr[1] & 0xff);

buff[i] = convert(wchr);
}

cout << "pin yin = [" << buff << "]" << endl;

return 0;
}

char convert(wchar_t n)
{
if (In(0xB0A1,0xB0C4,n)) return 'a';
if (In(0XB0C5,0XB2C0,n)) return 'b';
if (In(0xB2C1,0xB4ED,n)) return 'c';
if (In(0xB4EE,0xB6E9,n)) return 'd';
if (In(0xB6EA,0xB7A1,n)) return 'e';
if (In(0xB7A2,0xB8c0,n)) return 'f';
if (In(0xB8C1,0xB9FD,n)) return 'g';
if (In(0xB9FE,0xBBF6,n)) return 'h';
if (In(0xBBF7,0xBFA5,n)) return 'j';
if (In(0xBFA6,0xC0AB,n)) return 'k';
if (In(0xC0AC,0xC2E7,n)) return 'l';
if (In(0xC2E8,0xC4C2,n)) return 'm';
if (In(0xC4C3,0xC5B5,n)) return 'n';
if (In(0xC5B6,0xC5BD,n)) return 'o';
if (In(0xC5BE,0xC6D9,n)) return 'p';
if (In(0xC6DA,0xC8BA,n)) return 'q';
if (In(0xC8BB,0xC8F5,n)) return 'r';
if (In(0xC8F6,0xCBF0,n)) return 's';
if (In(0xCBFA,0xCDD9,n)) return 't';
if (In(0xCDDA,0xCEF3,n)) return 'w';
if (In(0xCEF4,0xD188,n)) return 'x';
if (In(0xD1B9,0xD4D0,n)) return 'y';
if (In(0xD4D1,0xD7F9,n)) return 'z';
return '\0';
}

bool In(wchar_t start, wchar_t end, wchar_t code)
{
if (code >= start && code <= end)
{
return true;
}
return false;
}