C语言获取系统时间

#include<time.h>
void gettime()
{
    
    

    time_t timep;
    struct tm *p;
    time(&timep);
    p = localtime(&timep);
    printf("%d-%d-%d  %d:%d:%d", (1900 + p->tm_year), (1 + p->tm_mon), p->tm_mday,p->tm_hour,p->tm_min,p->tm_sec);

}
int main(){
    
    
    gettime();
    return 0;
}