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1、
#include"stdio.h" /*學生成績管理系統(tǒng)*/
#include"string.h"
#include"stdlib.h"
#include"conio.h" /*函數 getch() 所需頭文件*/
int m,n;
FILE *fr;
char fname[81];
struct ke /*建立科目結構體*/
{
int dianfen; /*電路分析*/
int gaoshu; /*高等數學*/
int yingyu; /*大學英語*/
int dawu; /*大學物理*/
};
struct student
2、/*建立學生結構體*/
{
long num; /*學號*/
char name[21]; /*姓名*/
char xibie[21]; /*系別*/
char banji[21]; /*班級*/
struct ke kemu; /*科目*/
int zongfen; /*總分*/
}*s;
void find(); /*函數說明*/
void menu(); /*函數說明*/
void xpm(); /*函數說明*/
void bpm(); /*函數說明*/
void xifen(); /*函數說明*/
3、
void paim(); /*函數說明*/
void xi() /*按系查詢*/
{int i,j=0;char k[21];
clrscr();
printf("Please enter the Department to query:");/*請輸入所要查詢的系*/
scanf("%s",k);
printf("%10s%10s%10s%10s%8s%7s%7s%7s%10s\n","xuehao","xingming","xibie","banji","dianfen","gaoshu","yingyu","dawu","zongfen");
for(
4、i=0;i
5、intf("Press any key to continue.\n");
getch();
find();
}
void banji() /*按班級查詢*/
{
int i,j=0;char k[21];
clrscr();
printf("Please enter the class to query:"); /*請輸入所要查詢的班級*/
scanf("%s",k);
printf("%10s%10s%10s%10s%8s%7s%7s%7s%10s\n","xuehao","xingming","xibie","banji","dianfen","g
6、aoshu","yingyu","dawu","zongfen");
for(i=0;i
7、ass %s has %d student.\n",k,j);
printf("Press any key to continue.\n");
getch();
find();
}
void df() /*查詢電路分析成績*/
{
int i,j,t,k;int p[20];
clrscr();
for(i=0;i
8、;i++) /*索引排序*/
for(j=0;j
9、.\n");
getch();
find();
}
void gs() /*查詢高等數學成績*/
{
int i,j,t,k;int p[20];
clrscr();
for(i=0;i
10、p[j+1]].kemu.gaoshu)
{t=p[j];p[j]=p[j+1];p[j+1]=t;}
for(k=0;k
11、j,t,k;int p[20];
clrscr();
for(i=0;i
12、;k
13、 printf("%10s%10s%10s%10s%10s\n","xuehao","xingming","xibie","banji","dawu");
for(i=1;i
14、[k]].xibie,s[p[k]].banji,s[p[k]].kemu.dawu);}
printf("Press any key to continue.\n");
getch();
find();
}
void kemu() /*按科目查詢*/
{clrscr();
printf("\t\t\t*****----------*****\n");
printf("\t\t\t*** 1:Dian fen ***\n");
printf("\t\t\t*** 2:Gao shu ***\n");
printf("\t\t\t*** 3
15、:Ying yu ***\n");
printf("\t\t\t*** 4:Da wu ***\n");
printf("\t\t\t*** 0:Return ***\n");
printf("\t\t\t*****----------*****\n");
printf("Please enter your choice(0-4):");
scanf("%d",&m);
switch(m)
{case 0:find();break;
case 1:df();break;
case 2:gs();break;
case
16、 3:yy();break;
case 4:dw();break;
default:printf("Input error!\n");printf("Press any key to continue.\n");getch();kemu();
}
}
void xueh() /*修改學號*/
{int i;char k[20];
clrscr();
printf("Input the student's name:");
scanf("%s",k);
for(i=0;i
17、 {
printf("Ipnut the xuehao:");
scanf("%ld",&s[i].num);
}
}
void xingm() /*修改姓名*/
{int i;char k[20];
clrscr();
printf("Input the student's name:");
scanf("%s",k);
for(i=0;i
18、
}
void xib() /*修改系別*/
{int i;char k[20];
clrscr();
printf("Input the student's name:");
scanf("%s",k);
for(i=0;i
19、nput the student's name:");
scanf("%s",k);
for(i=0;i
20、
if(strcmp(k,s[i].name)==0)
{
printf("Ipnut the dian fen cheng ji:");
scanf("%d",&s[i].kemu.dianfen);
}
}
void gaos()/*修改高等數學成績*/
{int i;char k[20];
clrscr();
printf("Input the student's name:");
scanf("%s",k);
for(i=0;i
21、("Ipnut the gao shu cheng ji:");
scanf("%d",&s[i].kemu.gaoshu);
}
}
void yingy()/*修改大學英語成績*/
{int i;char k[20];
clrscr();
printf("Input the student's name:");
scanf("%s",k);
for(i=0;i
22、",&s[i].kemu.yingyu);
}
}
void daw()/*修改大學物理成績*/
{int i;char k[20];
clrscr();
printf("Input the student's name:");
scanf("%s",k);
for(i=0;i
23、生信息*/
{char k[20],p[20]="abcd";
clrscr();
printf("Input the password:");
scanf("%s",k);
if(strcmp(k,p)==0)
{clrscr();
printf("\t\t*****-------------------------*****\n");
printf("\t\t*** 1:Modified xuehao ***\n"); /*修改學號*/
printf("\t\t*** 2:Modified xingming **
24、*\n"); /*修改姓名*/
printf("\t\t*** 3:Modified xibie ***\n"); /*修改系別*/
printf("\t\t*** 4:Modified banji ***\n"); /*修改班級*/
printf("\t\t*** 5:Modified dianfen score ***\n"); /*修改電路分析成績*/
printf("\t\t*** 6:Modified gaoshu score ***\n"); /*修改高等數學成績*/
printf("
25、\t\t*** 7:Modified yingyu score ***\n"); /*修改大學英語成績*/
printf("\t\t*** 8:Modified dawu score ***\n"); /*修改大學物理成績*/
printf("\t\t*** 0:Return ***\n"); /*回到主菜單*/
printf("\t\t*****-------------------------*****\n");
printf("Please enter your choice(0-4):");
26、scanf("%d",&m);
switch(m)
{case 0:break;
case 1:xueh();break;
case 2:xingm();break;
case 3:xib();break;
case 4:banj();break;
case 5:dianf();break;
case 6:gaos();break;
case 7:yingy();break;
case 8:daw();break;
default:printf("Input error!\n");printf("Press a
27、ny key to continue.\n");getch();xiugai();
}
}find();
}
void find() /*查詢菜單*/
{clrscr();
printf("\t\t*****-----------------------------*****\n");
printf("\t\t*** 1:Inquiries by the Department ***\n"); /*按系查詢*/
printf("\t\t*** 2:Inquiries by the class ***\n"); /*按班級查詢*/
pri
28、ntf("\t\t*** 3:Inquiries by the subject ***\n"); /*按科目查詢*/
printf("\t\t*** 4:Modify the basic information ***\n"); /*基本信息修改*/
printf("\t\t*** 0:Back to main menu ***\n"); /*回到主菜單*/
printf("\t\t*****-----------------------------*****\n");
printf("Please enter your choice(
29、0-4):");
scanf("%d",&m);
switch(m)
{case 0:menu();break;
case 1:xi();break;
case 2:banji();break;
case 3:kemu();break;
case 4:xiugai();break;
default:printf("Input error!\n");printf("Press any key to continue.\n");getch();find();
}
}
void xipj() /*按系查詢(求單科平均成績、及格率和
30、優(yōu)秀率)*/
{double a=0,j=0,k=0,l=0;
int i;char f[21];
clrscr();
printf("Please enter the Department to query:");/*請輸入所要查詢的系*/
scanf("%s",f);
for(i=0;i=60) k++;
if(s[i].kemu.dianfen
31、>=90) l++;
}
}
if(j==0)
{printf("Input error!\n");printf("Press any key to continue.\n");getch();}
else
{printf("The Department:%s\nThe dianfen average score is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",f,a/j,k*100/j,l*100/j);
a=0;k=0;l=0;
for(i=0;i
32、mp(f,s[i].xibie)==0)
{
a+=s[i].kemu.gaoshu;
if(s[i].kemu.gaoshu>=60) k++;
if(s[i].kemu.gaoshu>=90) l++;
}
}
printf("The gaoshu average score is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",a/j,k*100/j,l*100/j);
a=0;k=0;l=0;
for(i=0;i
33、[i].xibie)==0)
{
a+=s[i].kemu.yingyu;
if(s[i].kemu.yingyu>=60) k++;
if(s[i].kemu.yingyu>=90) l++;
}
}
printf("The yingyu average score is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",a/j,k*100/j,l*100/j);
a=0;k=0;l=0;
for(i=0;i
34、ibie)==0)
{
a+=s[i].kemu.dawu;
if(s[i].kemu.dawu>=60) k++;
if(s[i].kemu.dawu>=90) l++;
}
}
printf("The dawu average score is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",a/j,k*100/j,l*100/j);
printf("Press any key to continue.\n");
getch();
}
xifen();
}
vo
35、id banpj() /*按班級查詢(求單科平均成績、及格率和優(yōu)秀率)*/
{double a=0,j=0,k=0,l=0;
int i;char f[21];
clrscr();
printf("Please enter the Class to query:");/*請輸入所要查詢的系*/
scanf("%s",f);
for(i=0;i=60) k+
36、+;
if(s[i].kemu.dianfen>=90) l++;
}
}
if(j==0)
{printf("Input error!\n");printf("Press any key to continue.\n");getch();}
else
{printf("The class:%s\nThe dianfen average scores is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",f,a/j,k*100/j,l*100/j);
a=0;k=0;l=0;
for(i=0;i<
37、n;i++)
{
if(strcmp(f,s[i].banji)==0)
{
a+=s[i].kemu.gaoshu;
if(s[i].kemu.gaoshu>=60) k++;
if(s[i].kemu.gaoshu>=90) l++;
}
}
printf("The gaoshu average scores is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",a/j,k*100/j,l*100/j);
a=0;k=0;l=0;
for(i=0;i
38、
{
if(strcmp(f,s[i].banji)==0)
{
a+=s[i].kemu.yingyu;
if(s[i].kemu.yingyu>=60) k++;
if(s[i].kemu.yingyu>=90) l++;
}
}
printf("The yingyu average scores is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",a/j,k*100/j,l*100/j);
a=0;k=0;l=0;
for(i=0;i
39、
if(strcmp(f,s[i].banji)==0)
{
a+=s[i].kemu.dawu;
if(s[i].kemu.dawu>=60) k++;
if(s[i].kemu.dawu>=90) l++;
}
}
printf("The dawu average scores is:%5.1lf jigelv:%.1lf%% youxiulv:%.1lf%%\n",a/j,k*100/j,l*100/j);
printf("Press any key to continue.\n");
getch(
40、);
}
xifen();
}
void xifen() /* 次菜單 (每系成績分析:求單科平均成績、及格率和優(yōu)秀率)*/
{clrscr();
printf("\t*****----------------------------*****\n");
printf("\t*** 1:Inquiries by the Department ***\n");/*按系查詢*/
printf("\t*** 2:Inquiries by the class ***\n");/*按班級查詢*/
printf("\t*** 0:Back to ma
41、in menu ***\n");/*回到主菜單*/
printf("\t*****----------------------------*****\n");
printf("Please enter your choice(0-2):");
scanf("%d",&m);
switch(m)
{case 0:menu();break;
case 1:xipj();break;
case 2:banpj();break;
default:printf("Input error!\n");printf("Press any ke
42、y to continue.\n");getch();xifen();
}
}
void kefen() /*對所開課程的成績分析（求其平均成績，最高分和最低分）*/
{int i,k1=0,k2=0;double a=0;
clrscr();
for(i=0;i=s[i].kemu.dianfen) k2=i;
}
printf("*****
43、Dianfen*****\naverage score:%.1lf\n",a/n);
printf("highest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k1].num,s[k1].name,s[k1].xibie,s[k1].banji,s[k1].kemu.dianfen);
printf("lowest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k2].num,s[k2].name,s[k2].xibie,s[k2].banji,s[k2].kemu.dianfen);
44、 /*電路分析的平均成績和最高低分*/
k1=k2=0;a=0;
for(i=0;i=s[i].kemu.gaoshu) k2=i;
}
printf("*****Gaoshu*****\naverage score:%.1lf\n",a/n);
printf("highest score:\n");
printf("%ld%10s%10s%
45、10s%6d\n",s[k1].num,s[k1].name,s[k1].xibie,s[k1].banji,s[k1].kemu.gaoshu);
printf("lowest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k2].num,s[k2].name,s[k2].xibie,s[k2].banji,s[k2].kemu.gaoshu); /*高等數學的平均成績和最高低分*/
printf("Press any key to continue.\n");
getch();
clrscr();
k1=k2=
46、0;a=0;
for(i=0;i=s[i].kemu.yingyu) k2=i;
}
printf("*****Yingyu*****\naverage score:%.1lf\n",a/n);
printf("highest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k1].num,s[k1].name
47、,s[k1].xibie,s[k1].banji,s[k1].kemu.yingyu);
printf("lowest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k2].num,s[k2].name,s[k2].xibie,s[k2].banji,s[k2].kemu.yingyu); /*大學英語的平均成績和最高低分*/
k1=k2=0;a=0;
for(i=0;i
48、f(s[k2].kemu.dawu>=s[i].kemu.dawu) k2=i;
}
printf("*****Dawu*****\naverage score:%.1lf\n",a/n);
printf("highest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k1].num,s[k1].name,s[k1].xibie,s[k1].banji,s[k1].kemu.dawu);
printf("lowest score:\n");
printf("%ld%10s%10s%10s%6d\n",s[k2].num
49、,s[k2].name,s[k2].xibie,s[k2].banji,s[k2].kemu.dawu); /*大學物理的平均成績和最高低分*/
printf("Press any key to continue.\n");
getch();
menu();
}
void xipm() /*按系單科排名*/
{
int i,j,t,a,k=0;int p[20];
char q[20];
clrscr();
printf("Please enter the Department to query:"); /*請輸入所要查詢的系*/
scanf(
50、"%s",q);
/*電路分析科排名*/
printf("***%s xi Dian fen dan ke pai ming ***\n",q);
for(i=0;i
51、+1]=t;}
printf("%10s%10s %8s %8s%8s\n","xuehao","xingming","xibie","banji","dianfen");
for(a=0;a
52、rscr();
/*高等數學科排名*/
printf("***%s xi Gao shu dan ke pai ming ***\n",q);
for(i=1;i
53、u");
for(a=0;a
54、;i++) /*索引排序*/
for(j=0;j
55、e,s[p[a]].xibie,s[p[a]].banji,s[p[a]].kemu.yingyu);}
printf("Press any key to continue.\n");
getch();
clrscr();
/*大學物理科排名*/
printf("***%s xi Da wu dan ke pai ming ***\n",q);
for(i=1;i
56、 {t=p[j];p[j]=p[j+1];p[j+1]=t;}
printf("%10s%10s %8s %8s%8s\n","xuehao","xingming","xibie","banji","dawu");
for(a=0;a
57、
getch();
paim();
}
void banpm() /*按每班總成績排名*/
{int i,j,t,k=0;int p[30];
char q[20];
clrscr();
printf("Please enter the class to query:\n"); /*請輸入所要查詢的班級*/
scanf("%s",q);
for(i=0;i
58、) /*索引排序*/
for(j=0;j
59、s%10s%10s%8d%8d%8d%8d%10d\n",s[p[k]].num,s[p[k]].name,s[p[k]].xibie,s[p[k]].banji,s[p[k]].kemu.dianfen,s[p[k]].kemu.gaoshu,s[p[k]].kemu.yingyu,s[p[k]].kemu.dawu,s[p[k]].zongfen);}
printf("Press any key to continue.\n");
getch();
paim();
}
void paim() /*學生考試成績排名菜單*/
{clrscr();
print
60、f("\t*****---------------------------------------------------*****\n");
printf("\t*** 1:Billing Division of the rankings by the Department ***\n"); /*按系單科排名*/
printf("\t*** 2:Ranked by total score of the class ***\n"); /*按班總成績排名*/
printf("\t*** 0:Back to main menu
61、 ***\n"); /*回到主菜單*/
printf("\t*****---------------------------------------------------*****\n");
printf("Please enter your choice(0-2):");
scanf("%d",&m);
switch(m)
{case 0:menu();break;
case 1:xipm();break;
case 2:banpm();break;
default:printf("Input er
62、ror!\n");printf("Press any key to continue.\n");getch();paim();
}
}
void save()
{int i;
fr=fopen(fname,"w");
for(i=0;i
63、;
fprintf(fr,"\n");
}
fcloseall();
}
void menu() /*主菜單*/
{clrscr();
printf("\t*****---------------------main menu---------------------*****\n");
printf("\t*** 1:Basic information inquiries ***\n"); /*基本信息的查詢*/
printf("\t*** 2:Department of subjects
64、 for each analysis of results ***\n"); /*對系各科成績的分析*/
printf("\t*** 3:The analysis to the performance of each course ***\n"); /*對所開課程的成績分析*/
printf("\t*** 4:Test scores of students to rank ***\n"); /*對學生考試成績進行排名*/
printf("\t*** 0:Exit the process
65、 ***\n"); /*退出程序*/
printf("\t*****----------------------------------------------------*****\n\n");
printf("Please enter your choice(0-4):");
scanf("%d",&m);
switch(m)
{case 0:save();free((void *)s);printf("Press any key to continue.\n");getch();break;
case 1:fin
66、d();break;
case 2:xifen();break;
case 3:kefen();break;
case 4:paim();break;
default:printf("Input error!\n");printf("Press any key to continue.\n");getch();menu();
}
}
void input()
{int i;
printf("Input the number of the student(<=the number of students in the file):"); /*輸入學生人數*/
scanf("%d",&n);
printf("xuehao xingming xibie banji dianfen gaoshu yingyu dawu\n");
s=(struct student *)malloc(n*sizeof(struct student)); /*建立n個學生成員*/
for(i=0;i
c語言 學生管理系統(tǒng) 不雷同
