教务信息管理系统

/* Note:Your choice is C IDE */
#include

struct Student
{
int num;
char name[20];
float score[3];
float avg;
}stus[30];

void Add(float*);/*填加学员*/
void List();/*/学员详细列表 */
void Asc();/*/显示后三名学员 */
void Desc();/*/显示前三名学员*/
void Display();

void main()
{
int s;
float xxx;

while(1)
{
printf("Students System:\n");
printf("1. Add Student\n");
printf("2. Student list\n");
printf("3. Display the before Three\n");
printf("4. Display the last three NUm\n");
printf("5. Display the average\n");
printf("6. Exit\n");
printf("Please input select:\t");
scanf("%d",&s);

switch(s)
{
case 1:
Add(&xxx);
break;
case 2:
List();
break;
case 3:
Desc();
Display();
break;
case 4:
Asc();
Display();
break;
case 5:
Display();
break;
case 6:
return;
break;
default:
printf("Select Wrong!\n");
break;
}
}
}

void Add(float* p)
{
int i,k;
float sum;
char c;

for(i=0;i<30;i++)
{
printf("Input the num %d student Information:\n",i+1);
printf("Num:");
scanf("%d",&stus[i].num);
printf("Name:");
fflush(stdin);
scanf("%s",stus[i].name);
printf("Please the before three chenji:\n");

sum=0;
for(k=0;k<3;k++)
{
printf("%d:",k+1);
scanf("%f",p);
stus[i].score[k]=*p;
sum+=stus[i].score[k];
}
stus[i].avg=sum/3;

printf("Is go on?");
fflush(stdin);
scanf("%c",&c);

if(c=='n' || c=='N')
return;
}

}

void List()
{
int i,j=0;
printf("Num\tName\tChenji1\tChenji2\tChenji3\tAverage\n");
for(i=0;i<30;i++)
{
if(stus[i].num!=0)
{
printf("%d\t%s\t%.2f\t%.2f\t%.2f\t%.2f\n",stus[i].num,stus[i].name,stus[i].score[0],stus[i].score[1],stus[i].score[2],stus[i].avg);

}
}

}

void Asc()
{
int i,j;
struct Student c;
for(i=0;i<30;i++)
{ for(j=0;j<29-i;j++)
if(stus[j].avg{
c=stus[j];
stus[j]=stus[j+1];
stus[j+1]=c;
}
}
}

void Desc()
{
int i,j;
struct Student c;
for(i=0;i<30;i++)
{ for(j=0;j<29-i;j++)
if(stus[j].avg>stus[j+1].avg)
{
c=stus[j];
stus[j]=stus[j+1];
stus[j+1]=c;
}
}
}

void Display()
{
int i,d=0;
printf("Num\tName\tAverage\n");
for(i=0;i<30;i++)
{
if(stus[i].num!=0)
{
printf("%d\t%s\t%.2f\n",stus[i].num,stus[i].name,stus[i].avg);
d++;
}
if(d==3)
break;
}

}
在楼上的这位基础上稍候修改了一下,因为其在TC中不能正常编译.......

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