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T7.inquire.cpp

@@ -0,0 +1,133 @@
+#include <stdio.h>
+#include <string.h>
+struct stud
+	{
+		int num;
+		int clas;
+		char name[10];
+		float math;
+		float phy;
+		float eng;
+	}t={};
+int main()
+{
+	struct stud stu[10]={{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.},
+	{10004,11,"Cai",89.6,56.9,90.5},
+	{10005,14,"Fu",55.6,67.9,98.9},
+	{10006,12,"Mao",22.1,45.9,99.2},
+	{10007,13,"Zhan",35.6,67.9,88.0}	
+	};
+	struct stud *p=stu;
+	void range(struct stud stu[]);
+	range(p);
+	void getclass(struct stud stu[]);
+	void getnum(struct stud stu[]);
+	void getname(struct stud stu[]);
+	void getgrade(struct stud stu[]);
+	void getclnum(struct stud stu[]);
+	int way;
+	scanf("%d",&way);
+	switch(way)
+	{
+		case 1:getclass(p);break;
+		case 2:getnum(p);break;
+		case 3:getname(p);break;
+		case 4:getgrade(p);break;
+		case 5:getclnum(p);break;
+			
+	}
+	return 0;
+}
+void range(struct stud stu[])
+{
+	int i,j;
+	for(i=0;stu[i].num!=0;i++)
+	{
+		if(stu[i+1].num!=0)
+		{
+			for(j=i+1;stu[j].num!=0;j++)
+			{
+				if(stu[i].clas>stu[j].clas)
+				{
+					t=stu[i];stu[i]=stu[j];stu[j]=t;
+				}
+			}
+		}
+	}
+	for(i=0;stu[i].num!=0;i++)
+	{
+		if(stu[i+1].num!=0)
+		{
+			for(j=i+1;stu[j].num!=0&&stu[i].clas==stu[j].clas;j++)
+			{
+				if(stu[i].math+stu[i].phy+stu[i].eng<stu[j].math+stu[j].phy+stu[j].eng)
+				{
+					t=stu[i];stu[i]=stu[j];stu[j]=t;
+				}
+			}
+		}
+	}
+}
+void getclass(struct stud stu[])
+{
+	int a,b,i;
+	char c;
+	scanf("%d %c %d",&a,&c,&b);
+	for(i=0;stu[i].num!=0;i++)
+	{
+		if(a<=stu[i].clas&&stu[i].clas<=b)
+			printf("%d %d %s %3.1f %3.1f %3.1f\n",stu[i].num,stu[i].clas,stu[i].name,stu[i].math,stu[i].phy,stu[i].eng);
+	}
+}
+void getnum(struct stud stu[])
+{
+	int a,b,i;
+	char c;
+	scanf("%d %c %d",&a,&c,&b);
+	for(i=0;stu[i].num!=0;i++)
+	{
+		if(a<=stu[i].num&&stu[i].num<=b)
+			printf("%d %d %s %3.1f %3.1f %3.1f\n",stu[i].num,stu[i].clas,stu[i].name,stu[i].math,stu[i].phy,stu[i].eng);
+	}
+}
+void getname(struct stud stu[])
+{
+	int i,j;
+	char cn[10];
+	scanf("%s",cn);
+	int l=strlen(cn)-1;
+	for(i=0;stu[i].num!=0;i++)
+	{
+		for(j=0;j<l;j++)
+		{
+			if(stu[i].name[j]!=cn[j])goto again;
+		}
+		printf("%d %d %s %3.1f %3.1f %3.1f\n",stu[i].num,stu[i].clas,stu[i].name,stu[i].math,stu[i].phy,stu[i].eng);
+		again:;
+	}
+}
+void getgrade(struct stud stu[])
+{
+	int i;
+	float a;
+	scanf("%f",&a);
+	for(i=0;stu[i].num!=0;i++)
+	{
+		if(stu[i].math+stu[i].phy+stu[i].eng>=a)
+			printf("%d %d %s %3.1f %3.1f %3.1f\n",stu[i].num,stu[i].clas,stu[i].name,stu[i].math,stu[i].phy,stu[i].eng);
+	}
+}
+void getclnum(struct stud stu[])
+{
+	int a,b,c,i;
+	char x,xx;
+	scanf("%d %c %d %c %d",&a,&x,&b,&xx,&c);
+	for(i=0;stu[i].num!=0;i++)
+	{
+		if(b<=stu[i].num&&stu[i].num<=c&&stu[i].clas==a)
+			printf("%d %d %s %3.1f %3.1f %3.1f\n",stu[i].num,stu[i].clas,stu[i].name,stu[i].math,stu[i].phy,stu[i].eng);
+	}
+}
+