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8.c

@@ -0,0 +1,183 @@
+#include <stdio.h> 
+int j=0,q=-1;
+char e;
+struct st
+			{
+			int xh;
+			int bj;
+			char xm[10];
+			float gs;
+			float dw;
+			float yy;	
+			}st[100];
+void input()
+{
+	printf("id ");
+    printf("class ");
+    printf("name ");
+    printf("score1 ");
+  	printf("score2 ");
+    printf("score3\n");
+	scanf("%d %d %s %.1f %.1f %.1f",&st[j].xh,&st[j].bj,&st[j].xm,&st[j].gs,&st[j].dw,&st[j].yy);
+    printf("continue?\n");
+    scanf("%*[^\n]");
+    scanf("%*c");
+	scanf("%c",&e);
+	j++;
+	if(e=='n')
+	{
+		return;
+	}
+	else if(e=='y') 
+	{
+		input();
+	}
+}
+void delete()
+{
+	int i,f,m=5,n;
+  char mm,s[10];
+  	  printf("Are you sure\n");
+  	   scanf("%*[^\n]");
+    scanf("%*c");
+	  scanf("%c\n",&mm);
+	  if(mm=='n')
+	  {
+	      output();
+	  }
+	  if(mm=='y')
+	  {
+         gets(s);
+  	for(f=0;f<j;f++)
+	  {
+	  if(strcmp(s,st[f].xm)==0||strcmp(s,st[f].xh)==0)
+	     {
+	       m=f;
+		   for(m;m<=j;m++)
+		   {
+		   	   st[m]=st[m+1];
+		   }
+		   j--;  		
+	     }
+	  }
+	  output();
+	 }
+}
+void select()
+{
+	int d,l;
+	printf("ÊäÈëѧºÅ»ò°à¼¶");
+	scanf("%d",&d);
+	for(l=0;l<j;l++)
+	{
+		if(d==st[l].xh||d==st[l].bj)
+		{
+			printf("%d %d %s %.1f %.1f %.1f\n",st[l].xh,st[l].bj,st[l].xm,st[l].gs,st[l].dw,st[l].yy);
+		}
+	}
+}
+void inorder()
+{
+	int i;
+	q++;
+	for(i=q+1;i<j;i++)
+	{
+		if(st[q].bj>st[i].bj)
+	       {
+	       	   struct st temp;
+	       	   temp=st[i];
+	       	   st[i]=st[q];
+	       	   st[q]=temp;
+		   }
+	}
+	if(q==j-1)
+	{
+		q=-1;
+		return;
+	}
+	inorder();
+}
+void corder()
+{
+	float a,b;
+	int i;
+	q++;
+	for(i=q+1;i<j;i++)
+	{
+		a=st[i].dw+st[i].gs+st[i].yy;
+		b=st[q].dw+st[q].gs+st[q].yy;
+		if(a>b&&st[i].bj==st[q].bj)
+		{
+			struct st temp;
+	       	   temp=st[i];
+	       	   st[i]=st[q];
+	       	   st[q]=temp;
+		}
+	}
+	if(q==j)
+	{
+		q=-1;
+	return;
+    }   
+	else corder();
+}
+void order()
+{
+	inorder();
+	corder();
+}
+void output()
+{
+	int l=0;
+	for(l=0;l<j;l++)
+	{
+		printf("%d %d %s %.1f %.1f %.1f\n",st[l].xh,st[l].bj,st[l].xm,st[l].gs,st[l].dw,st[l].yy);
+	}
+}
+int main( ) 
+{ 
+    int a;
+	mn:
+	printf("1.Input\n");
+	printf("2.delete\n");
+	printf("3.Select\n");
+	printf("4.Order\n");
+	printf("5.output\n"); 
+	printf("6.Quit\n");
+	printf("please input your option\n");
+	scanf("%d",&a);
+    switch(a)
+    {
+    	case 1:
+    		{
+    			input();
+			}
+			break;
+		case 2:
+			{
+				delete();
+			}
+			break;
+		case 3:
+			{
+				select();
+			}
+			break;
+		case 4:
+			{
+				order();
+			}
+			break;
+		case 5:
+			{
+				output();
+			}
+			break;
+		case 6:
+			{
+				return 0;
+			}
+	}
+	goto mn;
+}
+