学生成绩排序
程序代码：/*
自己写的一个不成样子的东西，还望大家不要见笑。
*/
#include<stdio.h>
#define N 40
#define CLEAR { char c; while( ( c=getchar() ) != '\n' && c != EOF ) ; }
char caidan[]={"*********************************************************\n"};
int xuanzhe()
{
int x;
do
{
system("cls");
printf("%s\n",caidan);
printf(" 您好，这是个成绩管理系统，它可以帮您整理出\n"
"您的学生成绩，您可以有四种选择：\n"
" 1.成绩从大到小排序，打印最高的学习成绩和学号；\n"
" 2.成绩从小到大排序，打印最低的学习成绩和学号；\n"
" 3.从低到高排序学号；\n"
" 4.从高到低排序学号；\n"
" 5.退出。\n\n%s\n",caidan);
printf("请输入您的选择：");
scanf(" %d",&x);
CLEAR;
if(x<1||x>5)
{
system("cls");
printf("您的输入有误，请重新输入\n");
sleep(1);
}
}
while(x<1||x>5);
if(x==5)
exit(0);
system("cls");
return x;
}
void shuru(float *chengji,int *xuehao,int n)
{
int i,j;
for(i=0;i<n;i++)
{
if(i==0)
system("cls");
printf("\n\n\n%s\n\n",caidan);
printf("请输入第%d个学生的学号：\n",i+1);
scanf(" %d",xuehao++);
CLEAR;
puts(" ");
printf("请输入该生成绩：\n");
scanf("%f",chengji++);
CLEAR;
}
}
void zuigao(float *chengji,int *xuehao,int n)
{
int i,j,zh;
float jh;
for(i=0;i<n;i++)
for(j=0;j<n-i-1;j++)
if(*(chengji+j)<*(chengji+j+1))
{
jh=*(chengji+j);
*(chengji+j)=*(chengji+j+1);
*(chengji+j+1)=jh;
zh=*(xuehao+j);
*(xuehao+j)=*(xuehao+j+1);
*(xuehao+j+1)=zh;
}
}
void zuidi(float *chengji,int *xuehao,int n)
{
int i,j,zh;
float jh;
for(i=0;i<n;i++)
for(j=0;j<n-i-1;j++)
if(*(chengji+j)>*(chengji+j+1))
{
jh=*(chengji+j);
*(chengji+j)=*(chengji+j+1);
*(chengji+j+1)=jh;
zh=*(xuehao+j);
*(xuehao+j)=*(xuehao+j+1);
*(xuehao+j+1)=jh;
}
}
void xuehao_gao(int *xuehao,float *chengji,int n)
{
int i,j,zh;
float jh;
for(i=0;i<n;i++)
for(j=0;j<n-i-1;j++)
if(*(xuehao+j)<*(xuehao+j+1))
{
zh=*(xuehao+j);
*(xuehao+j)=*(xuehao+j+1);
*(xuehao+j+1)=zh;
jh=*(chengji+j);
*(chengji+j)=*(chengji+j+1);
*(chengji+j+1)=jh;
}
}
void xuehao_di(int *xuehao,float *chengji,int n)
{
int i,j,zh;
float jh;
for(i=0;i<n;i++)
for(j=0;j<n-i-1;j++)
if(*(xuehao+j)>*(xuehao+j+1))
{
zh=*(xuehao+j);
*(xuehao+j)=*(xuehao+j+1);
*(xuehao+j+1)=zh;
jh=*(chengji+j);
*(chengji+j)=*(chengji+j+1);
*(chengji+j+1)=jh;
}
}
int main(void)
{
float chengji[N];
int xuehao[N],n,i,j,x;
while(1)
{
x=xuanzhe();
printf("\n%s\n\n您好，请输入您的学生人数：\n",caidan);
do
{
scanf(" %d",&n);
CLEAR;
puts(" ");
if(n<1||n>40)
printf("对不起，您的输入有误，请重新输入:\n");
}
while(n<1||n>40);
system("cls");
switch(x)
{
case 1:shuru(chengji,xuehao,n);
zuigao(chengji,xuehao,n);
printf("\n\n%s\n\n",caidan);
system("cls");
printf("\n\n\n%s\n",caidan);
j=1;
for(i=0;i<n;i++,j++)
{
printf(" %6d %8.2f ",xuehao[i],chengji[i]);
if(j%2==0)
puts(" ");
}
printf("\n%s\n",caidan);
printf("最高成绩和学号是：\n%8.2f %6d",chengji[0],xuehao[0]);
puts(" ");
break;
case 2: shuru(chengji,xuehao,n);
zuidi(chengji,xuehao,n);
printf("\n\n%s\n\n",caidan);
system("cls");
j=1;
for(i=0;i<n;i++,j++)
{
printf(" %6d %8.2f ",xuehao[i],chengji[i]);
if(j%2==0)
puts(" ");
}
printf("\n%s\n",caidan);
printf("最低成绩和学号是：\n%8.2f %6d",chengji[0],xuehao[0]);
puts(" ");
break;
case 3: shuru(chengji,xuehao,n);
xuehao_gao(&xuehao,&chengji,n);
system("cls");
printf("\n%s\n\n",caidan);
j=1;
for(i=0;i<n;i++,j++)
{
printf(" 学号：%6d成绩：%8.2f ",xuehao[i],chengji[i]);
if(j%2==0)
puts(" ");
}
puts(" ");
break;
case 4: shuru(chengji,xuehao,n);
xuehao_di(&xuehao,&chengji,n);
system("cls");
printf("\n%s\n\n",caidan);
j=1;
for(i=0;i<n;i++,j++)
{
printf(" 学号：%6d 成绩：%8.2f ",xuehao[i],chengji[i]);
if(j%2==0)
puts(" ");
}
puts(" ");
}
printf("请按任意键:\n");
getch();
}
getch();
}
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