diff --git a/t5.c b/t5.c
new file mode 100644
index 0000000..cbd57f3
--- /dev/null
+++ b/t5.c
@@ -0,0 +1,114 @@
+#include <stdio.h>
+#include <string.h>
+
+int Class[3];
+char name[3][20], num[3][10];
+float Maths[3], Physics[3], English[3], sum[3];
+
+void Swap(int k);
+void delete_array();
+void Sort();
+void print();
+
+int main()
+{
+    delete_array();
+}
+void delete_array()
+{
+    char ans, info_delete[20];
+    int l, kk = -1;
+    for (int i = 0; i < 3; i++)
+    {
+        scanf("%s%d%s%f%f%f", &num[i], &Class[i], name[i], &Maths[i], &Physics[i], &English[i]);
+        sum[i] = Maths[i] + Physics[i] + English[i];
+    }
+    getchar();
+    scanf("%s", info_delete);
+    for (int i = 0; i < 3; i++)
+    {
+        if (strcmp(name[i], info_delete) == 0)
+        {
+            kk = i;
+        }
+        else if (strcmp(num[i], info_delete) == 0)
+        {
+            kk = i;
+        }
+    }
+    if (kk == -1)
+    {
+        print();
+        return;
+    }
+    Sort();
+    for (int i = 0; i < 3; i++)
+    {
+        if (strcmp(info_delete, name[i]) && strcmp(info_delete, num[i]))
+        {
+            printf("%s %d %s %.1f %.1f %.1f\n", num[i], Class[i], name[i], Maths[i], Physics[i], English[i]);
+        }
+    }
+    getchar();
+    printf("Are you sure(yes/no)?\n");
+    scanf("%c", &ans);
+    if (ans == 'n')
+    {
+        print();
+        return;
+    }
+    else if (ans == 'y')
+    {
+        return;
+    }
+}
+void Swap(int k)
+{
+    int Class0 = Class[k];
+    char name0[20], num0[10];
+    strcpy(name0, name[k]);
+    strcpy(num0,num[k]);
+    float Maths0 = Maths[k], Physics0 = Physics[k], English0 = English[k], sum0 = sum[k];
+    Class[k] = Class[k - 1];
+    strcpy(name[k], name[k - 1]);
+    strcpy(num[k], num[k - 1]);
+    Maths[k] = Maths[k - 1];
+    Physics[k] = Physics[k - 1];
+    English[k] = English[k - 1];
+    sum[k] = sum[k - 1];
+    Class[k - 1] = Class0;
+    strcpy(name[k - 1], name0);
+    strcpy(num[k - 1], num0);
+    Maths[k - 1] = Maths0;
+    Physics[k - 1] = Physics0;
+    English[k - 1] = English0;
+    sum[k - 1] = sum0;
+}
+void Sort()
+{
+    for (int i = 0; i < 3; i++)
+    {
+        for (int j = 2; j > i; j--)
+        {
+            if (Class[j] < Class[j - 1])
+            {
+                Swap(j);
+            }
+            else if(Class[j] == Class[j - 1])
+            {
+                if (sum[j] > sum[j - 1])
+                {
+                    Swap(j);
+                }
+            }
+        }
+    }
+}
+void print()
+{
+    Sort();
+    for (int i = 0; i < 3; i++)
+    {
+        printf("%s %d %s %.1f %.1f %.1f\n", num[i], Class[i], name[i], Maths[i], Physics[i], English[i]);
+    }
+}
\ No newline at end of file