以当前时间命名日志文件

来源：互联网发布：阿里云解析的作用编辑：程序博客网时间：2024/05/21 17:18

多数时候需要以日志形式记录程序运行状态，日志的名称用时间（精确到秒）来命名可以避免重复

实例：

int CreateErrorLog(){    string path = "F:\logpath";    char buffer[256];     buffer = path.c_str();    len = path.length();    if (_access(buffer, 0) == -1)  // 判断存放日志的路径logpath文件夹是否存在    {        buffer[len++] = '\\';        int mRet = _mkdir(buffer); // 新建logpath路径        if (mRet)        {            printf("[Error]Failed to create directory:%s, exit\n", buffer);            return -1;        }        time_t timeTick = time(NULL);        strftime(buffer + len, _countof(buffer) - len, "Errlog_%Y%m%d%H%M%S.log", localtime(&timeTick));        buffer[_countof(buffer) - 1] = 0;        gErrorFile = fopen(buffer, "a");        if (gErrorFile == NULL)        {            printf("[Error]Failed to open file:%s, exit\n", buffer);            return -1;        }    }    else    {        buffer[len+++] = '\\';        time_t timeTick = time(NULL);        strftime(buffer + len, _countof(buffer) - len, "Errlog_%Y%m%d%H%M%S.log", localtime(&timeTick));        buffer[_countof(buffer) - 1] = 0;        gErrorFile = fopen(buffer, "a");        if (gErrorFile == NULL)        {            printf("[Error]Failed to open file:%s, exit\n", buffer);            return -1;        }    }    return 0;}

这样便可在目录F:\logpath下创建类似Errlog_20170613155203.log格式的日志文件

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