C语言专业课程设计学生成绩标准管理系统.doc

include

#include
/* strcmp函数原型包含*/
#define N 100
/*定义最大学生人数为100*/
struct student /*学生结构体定义*/
{
char no[11]; /*学号,10位*/
char name[10];/*姓名，3个汉字*/
float score[5];/*储存5门功课成绩*/
float ave;/*储存平均分*/
int year;/*入年*/
}stu[N];
int num;
int panduani(int); /*经过i值，判定信息要查找信息是否存在*/
void output(); /*输出学生成绩函数（公共函数）*/
void init(); /*系统初始化函数*/
void newfile(); /*建立新数据文件*/
void read1(); /*从数据文件中读取数据*/
void weihu(); /*维护界面函数*/
void new1(); /*新增一个学生成绩函数*/
void xiugai(); /*修改学生成绩*/
int xgcj(int); /*修改成绩*/
void delete1(); /*删除学生信息函数*/
void tongji(); /*统计界面函数*/
void tongji1(); /*计算每个学生平均分*/
void tongji2(); /*计算每门课程平均分*/
void paixu1(); /*排序函数*/
void paino(); /*按学号排序*/
void paiave(); /*按平均分排序*/
void paidkcj(); /*按单科成绩排序*/
void change(int,int); /*交换结构体数组中两个统计*/
void outputx(int); /*选择输出单科成绩 徐修楼编*/
void find1(); /*查找界面函数*/
int find(char sno[]); /*按学号查找*/
int findname(char cname[]);/*按姓名查找*/
void findyear(int cyear); /*按入年查找*/
void save(); /*保留文件*/
void stop(); /*停顿函数*/

void stop() /*停顿函数 （公共函数）*/
{
printf("Press Any Key To Continue...\n");
getch();
}

void output() /*输出学生成绩函数（公共函数）*/
{
int i,j;
printf("===============================================\n");
printf("XueHao XingMing RuXueNian C GaoShu DaWu DianLu MoDian\n");
printf("===================================================================\n");
for(i=0;i)
printf("% -7.1f",stu[i].score[j]);
printf("\n");
}
stop();
}

void init() /*系统初始化函数 */
{
if(access("stu.dat",0)) /*判定文件是否存在*/
newfile(); /*若不存在，新建数据文件*/
else
read1(); /*若存在，读取数据*/
}

void newfile() /*建立新数据文件 */
{
int i;
FILE *fp;
if((fp=fopen("stu.dat","wb"))==NULL) /*创建二进制文件*/
{
printf("Chuang Jian Shi Bai! Qing Chong Xin Yun Xing Cheng Xu.\n"); /*显示“创建文件失败，请重新运行程序”*/
exit(0); /*终止程序*/
}
printf(" Chu Ci Yun Xing, Jin Xing Shu Ju Chu Shi Hua...\n");/*显示“首次运行，进行数据初始化...”*/
stop();
clrscr();
printf(" Qing Shu Ru Xue Sheng Ren Shu:");/*显示“请输入学生人数：”*/
scanf("%d",&num);
for(i=0;i
scanf("%d",&stu[i].year);
printf("C-YuYan Cheng Ji:");/*显示“C语言成绩”*/
scanf("%f",&stu[i].score[0]);
printf("GaoShu Cheng Ji:");/*显示“高数成绩”*/
scanf("%f",&stu[i].score[1]);
printf("DaWu Cheng Ji:");/*显示“大物成绩”*/
scanf("%f",&stu[i].score[2]);
printf("DianLu Cheng Ji:");/*显示“电路成绩”*/

scanf("%f",&stu[i].score[3]);
printf("MoDian Cheng Ji:");/*显示“模电成绩”*/
scanf("%f",&stu[i].score[4]);
fwrite(&stu[i],1,sizeof(struct student),fp); /*把第i+1名学生成绩写入文件*/
}
fclose(fp);
clrscr();
printf("======================================\n");
printf(" Gung Cai Shu Ru De %d Ge Shu Ju Wei:\n",num); /*显示“刚才输入 num 个数据为：”*/
printf("======================================\n\n");
output();
}

void read1() /*从数据文件中读取数据 */
{
FILE *fp;
num=0; /*num为数据文件中实际存放学生人数*/
fp=fopen("stu.dat","r");
if(fp==NULL) /*数据文件不存在*/
{
printf("Wen Jian Da Kai Shi Bai! Chong Xin Yun Xing Cheng Xu\n"); /*显示“文件打开失败！重新运行程序”*/
exit(0);
}
while(!feof(fp))
{
fread(&stu[num],1,sizeof(struct student),fp);
num++;
}
num--;
fclose(fp);
printf("=======================================\n");
printf(" Xian You %d Ge Xue Sheng De Cheng Ji:\n",num); /*显示“现有 NUM个学生成绩：”*/
printf("=======================================\n\n");
output();
}

void weihu() /*维护界面函数 */
{
char c1;
while(1)
{
clrscr();
printf("\n\n\n\t\t\t*****************************\n");
printf("\t\t\t* Wei Hu *\n");
printf("\t\t\t* 1. Xin Zeng *\n"); /*新增*/
printf("\t\t\t* 2. Shan Chu *\n"); /*删除（按学号）*/
printf("\t\t\t* 3. Xiu Gai *\n"); /*修改*/
printf("\t\t\t* ESC. Fan Hui *\n"); /*返回*/
printf("\t\t\t*****************************\n");
printf("\t\t\tQing Xuan Ze:\n");/*请选择：*/
c1=getch);
if(c1==27)
break;
switch(c1)
{
case '1':
new1();
break;
case '2':
delete1();
case '3':
xiugai();
break;
default:
printf("Xuan Zen You Wu,Qing Chong Xuan!\n");/*“选择有误，请重选！”*/
}
}
}

void new1() /*新增一个学生成绩函数 */
{
printf("Qing Shu Ru Xue Hao:"); /*显示“请输入学号:”*/
getchar(); /*吃回车*/
gets(stu[num].no);
printf("Xing Ming:"); /*显示“姓名:”*/
gets(stu[num].name);
printf("Ru Xue Nian:");/*显示“入年”*/
scanf("%d",&stu[num].year);
printf("C-YuYan Cheng Ji:");/*显示“C语言成绩”*/
scanf("%f",&stu[num].score[0]);
printf("GaoShu Cheng Ji:");/*显示“高数成绩”*/
scanf("%f",&stu[num].score[1]);
printf("DaWu Cheng Ji:");/*显示“大物成绩”*/
scanf("%f",&stu[num].score[2]);
printf("DianLu Cheng Ji:");/*显示“电路成绩”*/
scanf("%f",&stu[num].score[3]);
printf("MoDian Cheng Ji:");/*显示“模电成绩”*/
scanf("%f",&stu[num].score[4]);
num++;
printf("\n======================================\n");
printf(" Xian You %d Ge Xue Sheng De Cheng Ji:\n",num); /*显示“现有 NUM个学生成绩：”*/
printf("======================================\n\n");
output();
}

void xiugai() /*修改学生成绩*/
{
char xg[11];
int i;
printf("\nQing shu ru yao xiu gai xue sheng de xue hao:\n\n");
gets(xg);
for(i=0;iint x) /*修改成绩*/
{
char xueke[5][10]={"Cyuyan"," Gaoshu","Wuli","Dianlu","Modian"};
char (*p)[10],c;
int j,k;
p=xueke;
for(;;)
{
clrscr();
printf("\n");
printf("\t\t\t************************************\n\n");
printf("\t\t\t Cheng Ji \n");
printf("\t\t\t 1.C Yu Yan \n"); /*C语言*/
printf("\t\t\t 2.Gao Shu \n"); /*高数*/
printf("\t\t\t 3.Wu Li \n"); /*大学物理*/
printf("\t\t\t 4.Dian Lu \n"); /*电路*/
printf("\t\t\t 5.Mo Dian \n"); /*模电*/
printf("\t\t\t Esc.Fan Hui \n\n"); /*返回上级*/
printf("\t\t\t************************************\n\n");
printf("\tQing xuan ze yao xiu gai de cheng ji(press 1.2.3.4.5.Esc):\n");
c=getch();
if(c==27)break;
else if (c>='1'&&c<='5')
{
k=c-49;
printf("\nQing shu ru %s cheng ji:\n",p+k);
scanf("%f",&stu[x].score[k]);
printf("\nXiu gai hou gai xue sheng xin xi wei:\n");
printf("XueHao XingMing RuXueNian C GaoShu DaWu DianLu MoDian\n");
printf("===================================================================\n");
printf("%-11s%-10s%-11d",stu[x].no,stu[x].name,stu[x].year);
for(j=0;j<5;j++)
printf("% -7.1f",stu[x].score[j]);
printf("\n");
}
else printf("\nXuan Zen You Wu,Qing Chong Xuan!\n\n");
stop();
}
}

int find(char sno[]) /*按学号查找 */
{
int i;
for(i=0;i return i;/*查找成功*/
return -1;/*查找失败*/
}

void delete1() /*删除学生信息函数*/
{
char cno[11];
int i,j;
printf("Qing Shu Ru Yao Shan Chu De Xue Sheng Xue Hao:"); /*“请输入要删除学生学号”*/
gets(cno);

i=find(cno);
if(i!=-1)
{for(j=i;jian You %d Ge Xue Sheng De Cheng Ji:\n",num); /*显示“现有 NUM个学生成绩：”*/
output();}
else {printf("qing shu ru zheng que de xue hao. \n");
stop();}
}

void tongji() /*统计界面函数 */
{
int i;
char c2;
while(1)
{
clrscr();
printf("\n\n\n\t\t\t************************************\n");
printf("\t\t\t* Tong Ji *\n");
printf("\t\t\t* 1. Xue Sheng Ping Jun Fen *\n"); /*计算学生平均分*/
printf("\t\t\t* 2. Ke Cheng Ping Jun Fen *\n"); /*计算每门课程平均分*/
printf("\t\t\t* ESC. Fan Hui *\n"); /*返回*/
printf("\t\t\t***************\n");
printf("\t\t\tQing Xuan Ze:\n");/*请选择：*/
c2=getch();
if(c2==27) break;
switch(c2)
{
case '1':
tongji1();
printf("\n\nXue Sheng Ping Jun Fen Wei:\n");
printf("===========================================\n");
printf("XueHao XingMing RuXueNian PingJunFen\n");
printf("===========================================\n");
for(i=0;ing Xuan!\n");/*“选择有误，请重选！”*/
}
}
}

void tongji1() /*计算每个学生平均分*/
{
int i,j;
for(i=0;iloat sum;
float avec[5]; /*储存每门课平均分*/
for(j=0;j<5;j++)
{
sum=0;
for(i=0;i
printf("===================================\n");
for(i=0;i<5;i++)
printf("%-7.1f",avec[i]);
printf("\n");
stop();
}

void paixu1() /*排序界面*/
{
char c3;
for(;;)
{
clrscr();
printf("\n\n\n");
printf("\t\t\t*************************************\n");
printf("\t\t\t* Pai Xu * \n");
printf("\t\t\t* 1. An Xue Hao * \n"); /*按学号排序*/
printf("\t\t\t* 2. An Ping Jun Fen * \n"); /*按平均分排序*/
printf("\t\t\t* 3. An dan ke cheng ji * \n"); /*按单科成绩排序*/
printf("\t\t\t* ESC. Fan Hui * \n"); /*返回*/
printf("\t\t\t*************************************\n\n");
printf("\t\Qing Xuan Ze(press 1.2.3.Esc):\n");/*请选择：*/
c3=getch();
if(c3==27) break;
switch(c3)
{
case '1':paino();break;
case '2':paiave();break;
case '3':paidkcj();break;
default:
printf("\nXuan Zen You Wu,Qing Chong Xuan!\n\n");/*选择有误，请重选!*/
stop();
}
}
}

void paino() /*按学号排序*/
{ /*按学号从低到高冒泡法排序*/
int i,j,k;
for(i=0;i0)

change(j,j+1);
printf("\nPai Xu Hou Wei:\n"); /*“排序后为：”*/
output();
}

void paiave() /*按平均分排序 */
{ /*按平均分从高到低冒泡法排序*/
int i,j;
struct student temp;
tongji1(); /*计算平均成绩*/
for(i=0;ive)
change(j,j+1);
printf("\n\tPai Xu Hou Wei:\n"); /*“排序后为：”*/
printf("\t===============================================\n");
printf("\tXueHao XingMing RuXueNian Ave Pai ming\n");
printf("\t===============================================\n");
for(i=0;i
printf("\t%-11s% -10s%-11d%-6.2f %4d\n",stu[i].no,
stu[i].name,stu[i].year,stu[i].ave,i+1);
stop();
}

void paidkcj() /*按单科成绩排序*/
{
char c;
int i,j,k;
for(;;)
{
clrscr();
printf("\n");
printf("\t\t\t*******************************\n\n");
printf("\t\t\t Dan Ke Cheng Ji \n");
printf("\t\t\t 1.C Yu Yan \n"); /*C语言*/
printf("\t\t\t 2.Gao Shu \n"); /*高数*/
printf("\t\t\t 3.Wu Li \n"); /*大学物理*/
printf("\t\t\t 4.Dian Lu \n"); /*电路*/
printf("\t\t\t 5.Mo Dian \n"); /*模电*/
printf("\t\t\t Esc.Fan Hui \n\n"); /*返回上级*/
printf("\t\t\t************************************\n\n");
printf("\tQing xuan ze(press 1.2.3.4.5.Esc):\n");
c=getch();
if(c==27)break;
else if (c>='1'&&c<='5')
{
k=c-49;
for(i=0;ige(j,j+1);
outputx(k);
}
else printf("\nXuan Zen You Wu,Qing Chong Xuan!\n\n");
stop();
}
}

void change(int i,int j) /*交换结构体数组中两个统计*/
{
struct student temp;
temp=stu[i];
stu[i]=stu[j];
stu[j]=temp;
}

void outputx(int k) /*选择输出单科成绩*/
{
char xueke[5][10]={"Cyuyan","Gaoshu","Wuli","Dianlu","Modian"};
char (*p)[10]; /*定义一个指向包含10个字符型元素一维数组指针变量*/
int i;
p=xueke;
printf("\n\tPai Xu Hou Wei:\n");
printf("\t===============================================\n");
printf("\tXueHao XingMing RuXueNian %s Pai Ming\n",p+k);
printf("\t===============================================\n");
for(i=0;iname[10];
int i,j,cyear;
while(1)
{
clrscr();
printf("\t\t\t************************************\n");
printf("\t\t\t* Cha Zhao *\n");
printf("\t\t\t* 1. An Xue Hao *\n"); /*按学号查找*/
printf("\t\t\t* 2. An Xing Ming *\n"); /*按姓名查找*/
printf("\t\t\t* 3. An Ru Xue Nian *\n"); /*按入年查找*/
printf("\t\t\t* ESC. Fan Hui *\n"); /*返回*/
printf("\t\t\t************************************\n");
printf("\t\t\tQing Xuan Ze:\n");/*请选择：*/
c4=getch();
if(c4==27) break;
switch(c4)
{
case '1':
printf("Shu Ru Xue Hao:\n");/*“输入学号：”*/
gets(cno);
i=find(cno);
panduani( i);
break;
case '2':
printf("Shu Ru Xing Ming:\n");/*“输入姓名：”*/
gets(cname);
i=findname(cname);
panduani(i);
break;
case '3':
printf("Shu Ru RU Xue Nian:\n");/*“输入入年”*/
scanf("%d",&cyear);
findyear(cyear);
stop();
break;
default:
printf("Xuan Zen You Wu,Qing Chong Xuan!\n");/*“选择有误，请重选！”*/
}
}
}
int findname(char cname[]) /*按姓名查找*/
{
int i;
for(i=0;i