linux C 下获取系统时间

#include <stdlib.h>#include <time.h>int main(int argc,char **argv){    struct tm *nowTime;    time_t nowTime_t;	//get now Time    time(&nowTime_t);    nowTime = localtime(&nowTime_t);    startTime_min = nowTime->tm_min;//nowTime->tm_year+1900;    //这里需要注意的是月 0-11 所以得到以后要加1    PRintf("%d.%d.%d-%d:%d:%d/n",nowTime->tm_year+1900,nowTime->tm_mon+1,nowTime->tm_mday,/			nowTime->tm_hour,startTime_min,nowTime->tm_sec);}
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//下面是将时间转换成数组，格式自己设定
void DateToString(struct tm* time,char*str){    snprintf(str,20,"%d_%d_%d_%d-%d-%d",/        time->tm_year+1900,time->tm_mon+1,time->tm_mday,/            time->tm_hour,time->tm_min,time->tm_sec);}