Update README.md

README.md

@@ -396,7 +396,155 @@ struct Scoreb student1={10001,11,"Zhang",99.5,88.5,89.5,277.5};
 }
 
 步骤七
+#include <stdio.h>
+#include <string.h>
+struct student
+            {
+                int number;
+                int clas;
+                char name[10];
+                float grade1;
+                float grade2;
+                float grade3;
+                float sum;
+                int signal;
+            }student[7]={{10001,11,"Zhang",99.5,88.5,89.5,0,0},
+			             {10002,12,"Yang",77.9,56.5,87.5,0,0},
+			             {10003,11,"Liang",92.5,99.0,60.5,0,0},
+			             {10004,11,"Cai",89.6,56.9,90.5,0,0},
+			             {10005,14,"Fu",55.6,67.9,98.9,0,0},
+			             {10006,12,"Mao",22.1,45.9,99.2,0,0},
+			             {10007,13,"Zhan",35.6,67.9,88.0,0,0}
+			            };
+struct student temp;
+
+
+void clas();
+void number();
+void name();
+void grade();
+void classandnumber();
+
+const int n=7;
+int main()
+{
+	int identity;
+	scanf("%d",&identity);
+	for(int i=0;i<7;i++)
+	{
+		student[i].sum=student[i].grade1+student[i].grade2+student[i].grade3;
+	}
+    int  i,j,k;
+	for(i=0;i<n-1;i++)
+	{
+		k=i;
+		for(j=i+1;j<n;j++)
+		{
+			if(student[j].clas<student[k].clas)
+			{
+			    k=j;		
+			}
+			else if(student[j].clas==student[k].clas)
+			{
+				if(student[j].sum>student[k].sum)
+				{
+					k=j;
+				}
+		    }
+		}
+		temp=student[k];
+		student[k]=student[i];
+		student[i]=temp;	
+	}	
+	switch(identity)
+	{
+		case 1:clas();break;
+		case 2:number();break;
+		case 3:name();break;
+		case 4:grade();break;
+		case 5:classandnumber();break;
+		default:printf("Wrong input!\n");
+	}		
+	for(i=0;i<n;i++)
+	{
+		if(student[i].signal!=0)
+		{
+			printf("%6d %3d %8s %6.1f %6.1f %6.1f\n",student[i].number,student[i].clas,student[i].name,student[i].grade1,student[i].grade2,student[i].grade3);
+		}
+	}
+	return 0;
+}
+
 
+void clas()
+{
+	int inf,noun,sup;
+	scanf("%d%c%d",&inf,&noun,&sup);
+	printf("%d %d",inf,sup);
+	for(int i=0;i<7;i++)
+	{
+		if(student[i].clas>=inf&&student[i].clas<=sup)
+		student[i].signal=1;
+	}
+}
+
+void number()
+{
+	int inf,noun,sup;
+	scanf("%d%c%d",&inf,&noun,&sup);
+	for(int i=0;i<7;i++)
+	{
+		if(student[i].number>=inf&&student[i].number<=sup)
+		student[i].signal=1;
+	}
+}
+
+void name()
+{		    
+    int i=0,k,count;
+    char initial[10];
+	scanf("%s",initial);
+	printf("%s\n",initial);
+	count=strlen(initial);
+	bool flag=true;
+	for(int i=0;i<n;i++)
+	{
+		for(int j=0;j<count-2;j++)
+		{
+			if(student[i].name[j]!=initial[j])
+		        flag=false;
+		}
+		if(flag)
+		{
+			student[i].signal=1;
+		}	    
+	}	
+}
+		
+void grade()
+{
+	int inf;
+	scanf("%d",&inf);
+	for(int i=0;i<7;i++)
+	{
+		if(student[i].sum>=inf)
+		student[i].signal=1;
+	}
+}
+
+void classandnumber()
+{
+	int clas,noun1,inf,noun2,sup;
+	scanf("%d%c%d%c%d",&clas,&noun1,&inf,&noun2,&sup);
+	for(int i=0;i<7;i++)
+	{
+		if(student[i].clas==clas)
+		{
+			if(student[i].number>=inf&&student[i].number<=sup)
+		    student[i].signal=1;
+		}	
+	}
+}
 步骤八
 #include<stdio.h>
 #include<string.h>