判断字符串中，中文字数

    char szBuffer[] = "wo我是中国人！woo";
    int nPos = 0;
    int nCnCount = 0;
    int nSize = strlen(szBuffer);
    while(nPos<nSize){
        if((int)szBuffer[nPos++] <0)
            ++nCnCount;
    }
    cout<<"存在中文字个数:"<<nCnCount/2<<endl;