diff --git a/main.c b/main.c
new file mode 100644
index 0000000..c8f681d
--- /dev/null
+++ b/main.c
@@ -0,0 +1,198 @@
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+#include"Array.h"
+void print_blanks(int n)
+{
+    for(int i = 0; i < n; i ++)
+        putchar(' ');
+}
+int make_sure(){
+    char s[200];
+    scanf("%s", s);
+    return strcmp(s, "yes") == 0;
+}
+struct StuInfo
+{
+    int     id;
+    char    *clas;
+    char    *name;
+    double  ma,
+            ph,
+            eg,
+            sum;
+};
+struct Array info;
+#define psf PAT(struct StuInfo, p)
+void Info_release_(void *p){
+    free(((struct StuInfo*)p)->clas);
+    free(((struct StuInfo*)p)->name);
+}
+void Info_add(int id,const char *const clas, const char *const name, double ma, double ph, double eg){
+    struct StuInfo stu = {id, NULL, NULL, ma, ph, eg, ma+ph+eg};
+    stu.clas = malloc_s_strcpy(clas);
+    stu.name = malloc_s_strcpy(name);
+    Array_insert(&info, &stu, info.size);
+}
+void Info_Add()
+{
+    printf("Info Adding Guide:\nPlease type in Student's \n[id, class, name, math score, physics score, english score] in orders\n");
+    char tmp[200];
+    struct StuInfo stu;
+    do{
+        printf("Id:");scanf("%d", &stu.id);
+        printf("Class:");scanf("%s", tmp);
+        stu.clas = malloc_s_strcpy(tmp);
+        printf("Name:");scanf("%s", tmp);
+        stu.name = malloc_s_strcpy(tmp);
+        printf("Math Score:");scanf("%lf", &stu.ma);
+        printf("Physics Score:");scanf("%lf", &stu.ph);
+        printf("English Score:");scanf("%lf", &stu.eg);
+        stu.sum += stu.ma + stu.ph + stu.eg;
+        Array_insert(&info, &stu, info.size);
+        printf("Continue to Add?[yes/no]\n");
+    }while(make_sure());
+    printf("Info Adding Done.\n");
+}
+void info_format_print(struct Array_ *p){
+    printf("%d  %s  %s  %2.1lf  %2.1lf  %2.1lf  %2.1lf\n",psf->id,psf->clas,psf->name,psf->ma,psf->ph,psf->eg,psf->sum);
+}
+void Info_Remove()
+{
+    printf("Remove Guide:\nType in [id] of the students you want to remove\n");
+    int num, ord = 0, stk[200], tp = 0;
+    scanf("%d", &num);
+    Range(info){
+        ord++;
+        if(psf->id == num)
+            stk[tp ++] = ord;
+    }
+    if(tp){
+        printf("Found:%d\n", tp);
+        Range(info){
+            ord++;
+            if(psf->id == num)
+                info_format_print(p);
+        }
+        if(tp != 1)
+            scanf("%d", &num);
+        else num = 1;
+        if(num > 0 && num < tp){
+            printf("Make Sure To Remove?[yes/no]");
+            if(make_sure()){
+                Array_deletepos(&info, stk[num-1]);
+                printf("Remove Done\n");
+            }else printf("Canceling the option\n");
+        }else printf("illegal input of the Index\n");
+    }else printf("Student [id:%d] Not Found\n", num);
+}
+void Info_Show()
+{
+    printf("Here lists all infomation stored in the system:\n");
+    Range(info)
+        info_format_print(p);
+    printf("[End]\n");
+}
+void Info_Quiry()
+{
+    printf("Qury Guide:\nType in [id] of the students you are looking for\n");
+    int num, ord = 0, stk[200], tp = 0;
+    scanf("%d", &num);
+    Range(info){
+        ord++;
+        if(psf->id == num)
+            stk[tp ++] = ord;
+    }
+    if(tp){
+        printf("Found:%d\n", tp);
+        Range(info){
+            ord++;
+            if(psf->id == num)
+                info_format_print(p);
+        }
+    }else printf("Student [id:%d] Not Found\n", num);
+}
+int Info_sortById_a(void *a, void *b){
+    return ((struct StuInfo*)a)->id - ((struct StuInfo*)b)->id;
+}
+int Info_sortByClass_a(void *a, void *b){
+    return strcmp(((struct StuInfo*)a)->clas, ((struct StuInfo*)b)->clas);
+}
+int Info_sortByName_a(void *a, void *b){
+    return strcmp(((struct StuInfo*)a)->name, ((struct StuInfo*)b)->name);
+}
+int Info_sortBySumScore_a(void *a, void *b){
+    return ((struct StuInfo*)a)->sum - ((struct StuInfo*)b)->sum;
+}
+void Info_SortByKeys()
+{
+    int keys, order = 0;
+    printf("Sort Guide:\nType in Keys:\n");
+    printf("1.id\n2.class\n3.name\n4.total score\n");
+    scanf("%d", &keys);
+    printf("Choose the sort order:\n1.ascend\n2.descend\n");
+    scanf("%d", &order);
+    int (*func)(void *, void *);
+    switch(keys){
+        case 1:func = Info_sortById_a;break;
+        case 2:func = Info_sortByClass_a;break;
+        case 3:func = Info_sortByName_a;break;
+        case 4:func = Info_sortBySumScore_a;break;
+        default:
+            printf("Illegal Input\n");
+            return;
+    }
+    Array_sort(&info, func, order >= 2);
+    printf("Sort Finished\n");
+    Info_Show();
+}
+
+struct Opt{
+    char *opt;
+    void (*func)();
+};
+struct Array Cmds;
+void Opts_Append(const char *const opt, void (*func)()){
+    struct Opt optt = {NULL, func};
+    optt.opt = malloc_s_strcpy(opt);
+    Array_insert(&Cmds, &optt, Cmds.size);
+}
+void Opts_release_(void *p){
+    free(((struct Opt *)p)->opt);
+}
+int Opts_Select(){
+    int i=0;
+    Range(Cmds)
+        printf("%d.%s\n", ++i, PAT(struct Opt, p)->opt);
+    printf("%d.Quit\n", ++i);
+    int selectNum = 0;
+    scanf("%d", &selectNum);
+    if(selectNum > i || selectNum < 1){
+        printf("Error Input:%d\n", selectNum);
+        return 1;
+    }else if(selectNum == i){
+        printf("Quit From System...\n");
+        return 0;
+    }else PAT(struct Opt, Array(&Cmds, selectNum-1))->func();
+    return 1;
+}
+
+
+int main(){
+    ArrayList_Init();
+    DECLARE_ARRAY(struct StuInfo, Info_release_)
+    DECLARE_ARRAY(struct Opt, Opts_release_)
+    ARRAY_BIND(info, struct StuInfo);
+    ARRAY_BIND(Cmds, struct Opt);
+    Opts_Append("Quiry", Info_Quiry);
+    Opts_Append("Add", Info_Add);
+    Opts_Append("Remove", Info_Remove);
+    Opts_Append("Show", Info_Show);
+    Opts_Append("SortByKeys", Info_SortByKeys);
+    Info_add(1, "CLASS_TEST_1", "TEST_2", 100, 100, 100);
+    Info_add(2, "CLASS_TEST_2", "TEST_4", 20, 0, 60);
+    Info_add(3, "CLASS_TEST_3", "TEST_1", 5, 53, 100);
+    while(Opts_Select());
+    ArrayList_Rel();
+    printf("Done\n");
+}