bkjw.xjtu.edu.cn/7.c

#include <stdio.h>
#include <string.h>

struct student{
	int n;
	int c;
	char l[8];
	float m;
	float p;
	float e;
	float s;
}stu[7]={{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},{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",35.6,67.0,88.0}};
//<2F><><EFBFBD>ͺ<EFBFBD><CDBA><EFBFBD> 
void sum(struct student stu[7])
{
	int i;
	for(i=0;i<7;i++)
	{
		stu[i].s=stu[i].m+stu[i].p+stu[i].e;
	}
}
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
void sort(struct student stu[],int len)
{
	int i,j;
	for(i=0;i<len;i++)
	{
		int k=i;
		for(j=i;j<len;j++)
		{
			if(stu[k].c>stu[j].c||(stu[k].c==stu[j].c&&stu[k].s<stu[j].s))
			{
				k=j;
			}
			if(k!=i)
			{
				struct student temp=stu[i];
				stu[i]=stu[k];
				stu[k]=temp;
			}
		}
	}
	for(i=0;i<len;i++)
	{
	printf("%d %d %s %.1f %.1f %.1f \n",stu[i].n,stu[i].c,stu[i].l,stu[i].m,stu[i].p,stu[i].e);
	}
}

void class(int a,int b)
{
	struct student temp[7];
	int i,j=0;
	for(i=0;i<7;i++)
	{
		if(a<=stu[i].c&&stu[i].c<=b)
		temp[j++]=stu[i];
	}
	sort(temp,j);  	
} 
void number(int a,int b)
{
	struct student temp[7];
	int i,j=0;
	for(i=0;i<7;i++)
	{
		if(a<=stu[i].n&&stu[i].n<=b)
		temp[j++]=stu[i];
	}
	sort(temp,j);  	
} 
void name(const char* prefix)
{
    struct student temp[7];
    int i,j = 0;
    for (i = 0; i < 7; i++)
    {
        if (strncmp(prefix, stu[i].l, strlen(prefix)) == 0)
            temp[j++] = stu[i];
    }
    sort(temp, j);
}

void score(int a)
{
	struct student temp[7];
	int i,j=0;
	for(i=0;i<7;i++)
	{
		if(a<=stu[i].s)
		temp[j++]=stu[i];
	}
	sort(temp,j);	
} 
void candn(int a,int b,int c)
{
	struct student temp1[7],temp2[7];
	int i,j=0;
	for(i=0;i<7;i++)
	{
		if(a==stu[i].c)
		temp1[j++]=stu[i];
	}
	int len=j-1;
	for(i=0,j=0;i<len;i++)
	{
		if(b<=temp1[i].n&&temp1[i].n<=c)
		temp2[j++]=temp1[i];
	}
	
	sort(temp2,j);  	
} 


int main()
{
	sum(stu);
	char gets=getchar();
	//<2F><><EFBFBD>༶ 
	if(gets=='1')
	{
		int a,b;
		scanf("%d-%d",&a,&b);
		class(a,b);
	}
	//<2F><>ѧ<EFBFBD><D1A7> 
	if(gets=='2')
	{
		int a,b;
		scanf("%d-%d",&a,&b);
		number(a,b);
	}
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
	if (gets=='3')
    {
        char prefix[8];
        scanf("%s", prefix);
        name(prefix);
    }
	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
	if(gets=='4')
	{
		int a;
		scanf("%d",&a);
		score(a);
	}
	//<2F><><EFBFBD>༶<EFBFBD><E0BCB6>ѧ<EFBFBD><D1A7> 
	if(gets=='5')
	{
		int a,b,c;
		scanf("%d.%d-%d",&a,&b,&c);
		candn(a,b,c);
	}
	
}