diff --git a/c/xerelease4.c b/c/xerelease4.c
new file mode 100644
index 0000000..f6d5bc2
--- /dev/null
+++ b/c/xerelease4.c
@@ -0,0 +1,85 @@
+#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;
+}