diff --git a/program 5.c b/program 5.c
new file mode 100644
index 0000000..fc96efa
--- /dev/null
+++ b/program 5.c	
@@ -0,0 +1,69 @@
+#include<stdio.h>
+#include<string.h>
+struct stu
+{
+	char num[20];
+	int c,x;
+	char name[20];
+	float m,p,e,s;
+};
+
+struct stu stu[3]={{"10001",11,1,"Zhang",99.5,88.5,89.5},
+						{"10002",12,1,"Yang",77.9,56.5,87.5},
+						{"10003",11,1,"Liang",92.5,99.0,60.5}};
+
+
+void ee(struct stu* stu,char* a[20])
+{
+	int i,exist=0;
+	for (i=0;i<3;i++)
+	{
+		if(strcmp((stu+i)->num,a)==0||strcmp((stu+i)->name,a)==0)
+		{
+			(stu+i)->x=0;
+			exist=1;
+		}
+	}
+	if(exist)
+	{
+		
+		char w;scanf(" %c",&w);
+		if(w=='y')
+		{
+			int st=0;
+			for(i=0;i<2;i++)
+			{
+				if(!(stu+i)->x||st==1)
+				{
+					st=1;
+					*(stu+i)=*(stu+i+1);
+				}
+			}
+			return;
+		}
+		else if(w=='n')
+		{
+			for(i=0;i<3;i++)
+			{
+				stu[i].x=1;
+				printf("%s %d %s %.1f %.1f %.1f\n",stu[i].num,stu[i].c,stu[i].name,stu[i].m,stu[i].p,stu[i].e);
+			}return;
+		}
+	}
+}
+
+int main()
+{int i; 
+	char a[20];
+	scanf("%s",a);
+	for (i=0;i<3;i++)
+	{
+		if(strcmp((stu+i)->num,a)==0||strcmp((stu+i)->name,a)==0)
+		{
+			(stu+i)->x=0;printf("Are you sure(yes/no)?\n");
+		}
+	}
+	for(i=0;i<3;i++) if((stu+i)->x) printf("%s %d %s %.1f %.1f %.1f\n",stu[i].num,stu[i].c,stu[i].name,stu[i].m,stu[i].p,stu[i].e);
+	ee(stu,a);
+	return 0;
+}