diff --git a/E2step5.c b/E2step5.c
new file mode 100644
index 0000000..ff3ca4d
--- /dev/null
+++ b/E2step5.c
@@ -0,0 +1,35 @@
+#include<stdio.h>
+#include<string.h>
+#define N 3
+struct Student
+{char xuehao[10];
+ int banji;
+ char name[20];
+ float grade1;
+ float grade2;
+ float grade3;
+};
+int main()
+{struct Student st[N]={{"10001",11,"Zhang",99.5,88.5,89.5},
+{"10002",12,"Yang",77.9,56.5,87.5},
+{"10003",11,"Liang",92.5,99.0,60.5}};
+ int i,j=-1,k,l;
+ char c='a';
+ char s[20];
+  scanf("%s",s);
+  for(i=0;i<N;i++)
+  if(strcmp(s,st[i].xuehao)==0||strcmp(s,st[i].name)==0)
+  {j=i;break;}
+ for(k=0;k<N;k++)
+ {if(k==j)continue;
+  else printf("%s %d %s %.1f %.1f %.1f\n",st[k].xuehao,st[k].banji,st[k].name,st[k].grade1,st[k].grade2,st[k].grade3);
+ 	 
+ }
+  printf("Are you sure?(yes/no)\n");
+while(c){ scanf("%c",&c);
+ if(c=='n') {for(l=0;l<N;l++)
+  printf("%s %d %s %.1f %.1f %.1f\n",st[l].xuehao,st[l].banji,st[l].name,st[l].grade1,st[l].grade2,st[l].grade3); }
+    if(c=='y'||c=='n')break;}
+ return 0; 
+}
+