Linux往log中写日志

void writelog(const char* log)
{
time_t tDate;
struct tm* eventTime;
time(&tDate);//得到系统当前时间
//将time_数据类型转换为struct tm结构
eventTime = localtime(&tDate);
//年，以1900年作为起始值。如果当前年为1991，则year变量=1
int year = eventTime->tm_year + 1900;
//月：tm_mon从0开始计算
int month = eventTime->tm_mon + 1;
//日：
int day = eventTime->tm_mday;
//小时
int hour = eventTime->tm_hour;
//分钟
int minute = eventTime->tm_min;
//秒
int second = eventTime->tm_sec;char sDate[16];
sprintf(sDate, "%04d-%02d-%02d ", year,month,day);
char sTime[16];
sprintf(sTime, "%02d:%02d:%02d", hour, minute, second);
char s[1024];
sprintf(s, "%s %s %s\n", sDate, sTime, log);FILE* fp = fopen("my.log", "a+");
if (fp==NULL)
{
printf("log write error :%s", strerror(errno));
}
else
{
fputs(s, fp);
fclose(fp);
}
return;
}