#include<stdio.h>
#include<time.h>
#include<string.h>
#include<stdlib.h>
typedef void(*LP)(struct tm *local);//define a  pointer function
int total_day(int year,int month,int day){//Calculate day of 1 year
	int sum=0;
	switch(month){
		case 1:
			sum=day;break;
		case 2:
			sum=day+31;break;
		case 3:
			sum=day+59;break;
		case 4:
			sum=day+90;break;
		case 5:
			sum=day+120;break;
		case 6:
			sum=day+151;break;
		case 7:
			sum=day+181;break;
		case 8:
			sum=day+212;break;
		case 9:
			sum=day+243;break;
		case 10:
			sum=day+273;break;
		case 11:
			sum=day+304;break;
		case 12:
			sum=day+334;break;
		default:
			printf("Date Wrong!");
	}
	if(year%4==0&&year%100!=0) sum=sum+1;
	return sum;
}
int total_year_day(int year1,int year2){//Calculate day of years
	int sum=0;
	sum=(year2-year1)*365;
	for(int i=year1;i<year2;i++){
		if(i%4==0&&i%100!=0){
			sum=sum+1;
		}
	}
	return sum;
}
void dale(struct tm *local){
	printf("xeinit release maker by dale\n");
}
void release(struct tm *local){
	int rel=0;//release version
	int year1=2019,month1=1,day1=11,year2=local->tm_year+1900,month2=local->tm_mon+1,day2=local->tm_mday;
	rel=total_year_day(year1,year2)-total_day(year1,month1,day1)+total_day(year2,month2,day2);//get release version
    printf("Xeinit LTS version:5.2.%d\n",rel);
	freopen("xe-5.x","a",stdout);//put all output in xe-release file
    printf("%d-%d-%d ",local->tm_year+1900,local->tm_mon+1,local->tm_mday);//output:release branch time in xe-release
    printf("5.2.%d\n",rel);
    fclose(stdout);
    return ;
}
void develop(struct tm *local){
	char devel[57];//development version
	printf("xeinit 6 version:");
    scanf("%s",&devel);//get development version
    freopen("xe-6.x","a",stdout);
    printf("%d-%d-%d ",local->tm_year+1900,local->tm_mon+1,local->tm_mday);//output:development branch time in xe-release
    printf("%s\n",devel);
    fclose(stdout);
    return ;
}
int main(int argc, char **argv) {
    struct tm *local;
    time_t t;
    t=time(NULL);
    local=localtime(&t);//Get local time
    LP a[]={dale,release,develop};
    int x;
    printf("Input branch:1.release 2.development\n");
    scanf("%d",&x);
    a[x](local);
    system("pause");
    return 0;
}