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E2 step6.c

@@ -0,0 +1,33 @@
+#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}};
+ struct Student a,b;
+ scanf("%s%d%s%f%f%f",&a.xuehao,&a.banji,a.name,&a.grade1,&a.grade2,&a.grade3);
+ int i,j,k,l;
+ for(i=0;i<N;i++)if(strcmp(a.xuehao,st[i].xuehao)==0)st[i]=a;
+ for(j=0;j<N-1;j++)
+ {for(l=j+1;l<N;l++)
+    if(st[j].banji>st[l].banji){b=st[j];st[j]=st[l];st[l]=b;}}
+ printf("%d %s %s %.1f %.1f %.1f\n",st[0].banji,st[0].xuehao,st[0].name,st[0].grade1,st[0].grade2,st[0].grade3);
+ for(k=1;k<N;k++)
+ {
+ if(st[k].banji==st[k-1].banji)
+ printf("   %s %s %.1f %.1f %.1f\n",st[k].xuehao,st[k].name,st[k].grade1,st[k].grade2,st[k].grade3);
+ else printf("%d %s %s %.1f %.1f %.1f\n",st[k].banji,st[k].xuehao,st[k].name,st[k].grade1,st[k].grade2,st[k].grade3);
+ 
+}
+ return 0;
+}
+