求java用c语言写一个的一个关于学生的名字，学号，成绩等一些的全英文编程
学生成绩管理程序
编制一个统计学生考试分数的管理程序。
设学生成绩已以一个学生一个记录的形式存储在文件中，
每位学生记录包含的信息有：姓名，学号和各门功课的成绩。
程序具有以下几项功能：求出各门课程的总分，平均分，按姓名，
按学号寻找其记录并显示，浏览全部学生成绩和按总分由高到低显示学生信息等。
#include
#defineSWN3/*课程数*/
#defineNAMELEN20/*姓名最大字符数*/
#defineCODELEN10/*学号最大字符数*/
#defineFNAMELEN80/*文件名最大字符数*/
#defineBUFLEN80/*缓冲区最大字符数*/
/*课程名称表*/
charschoolwork[SWN][NAMELEN+1]={"Chinese","Mathematic","English"};
structrecord
charname[NAMELEN+1];/*姓名*/
charcode[CODELEN+1];/*学号*/
intmarks[SWN];/*各课程成绩*/
inttotal;/*总分*/
}stu;
structnode
charname[NAMELEN+1];/*姓名*/
charcode[CODELEN+1];/*学号*/
intmarks[SWN];/*各课程成绩*/
inttotal;/*总分*/
structnode*next;/*后续表元指针*/
}*head;/*链表首指针*/
inttotal[SWN];/*各课程总分*/
FILE*stfpt;/*文件指针*/
charstuf[FNAMELEN];/*文件名*/
/*从指定文件读入一个记录*/
intreadrecord(FILE*fpt,structrecord*rpt)
charbuf[BUFLEN];
inti;
if(fscanf(fpt,"%s",buf)!=1)
return0;/*文件结束*/
strncpy(rpt->name,buf,NAMELEN);
fscanf(fpt,"%s",buf);
strncpy(rpt->code,buf,CODELEN);
for(i=0;i
fscanf(fpt,"%d",&rpt->marks[i]);
for(rpt->total=0,i=0;i
rpt->total+=rpt->marks[i];
return1;
/*对指定文件写入一个记录*/
writerecord(FILE*fpt,structrecord*rpt)
inti;
fprintf(fpt,"%s\n",rpt->name);
fprintf(fpt,"%s\n",rpt->code);
for(i=0;i
fprintf(fpt,"%d\n",rpt->marks[i]);
return;
/*显示学生记录*/
displaystu(structrecord*rpt)
inti;
printf("\nName:%s\n",rpt->name);
printf("Code:%s\n",rpt->code);
for(i=0;i
printf("%-15s:%4d\n",schoolwork[i],rpt->marks[i]);
printf("Total:%4d\n",rpt->total);
/*计算各单科总分*/
inttotalmark(char*fname)
FILE*fp;
structrecords;
intcount,i;
if((fp=fopen(fname,"r"))==NULL)
printf("Cantopenfile%s.\n",fname);
return0;
for(i=0;i
total[i]=0;
count=0;
while(readrecord(fp,&s)!=0)
for(i=0;i
total[i]+=s.marks[i];
count++;
fclose(fp);
returncount;/*返回记录数*/
/*列表显示学生信息*/
voidliststu(char*fname)
FILE*fp;
structrecords;
if((fp=fopen(fname,"r"))==NULL)
printf("Cantopenfile%s.\n",fname);
return;
while(readrecord(fp,&s)!=0)
displaystu(&s);
printf("\nPressENTERtocontinue...\n");
while(getchar()!=\n);
fclose(fp);
return;
/*构造链表*/
structnode*makelist(char*fname)
FILE*fp;
structrecords;
structnode*p,*u,*v,*h;
inti;
if((fp=fopen(fname,"r"))==NULL)
printf("Cantopenfile%s.\n",fname);
returnNULL;
h=NULL;
p=(structnode*)malloc(sizeof(structnode));
while(readrecord(fp,(structrecord*)p)!=0)
while(v&&p->total<=v->total)
v=v->next;
if(v==h)
u->next=p;
p->next=v;
p=(structnode*)malloc(sizeof(structnode));
free(p);
fclose(fp);
returnh;
/*顺序显示链表各表元*/
voiddisplaylist(structnode*h)
while(h!=NULL)
displaystu((structrecord*)h);
printf("\nPressENTERtocontinue...\n");
while(getchar()!=\n);
h=h->next;
return;
/*按学生姓名查找学生记录*/
intretrievebyn(char*fname,char*key)
FILE*fp;
intc;
structrecords;
if((fp=fopen(fname,"r"))==NULL)
printf("Cantopenfile%s.\n",fname);
return0;
while(readrecord(fp,&s)!=0)
if(strcmp(s.name,key)==0)
displaystu(&s);
fclose(fp);
if(c==0)
printf("Thestudent%sisnotinthefile%s.\n",key,fname);
return1;
/*按学生学号查找学生记录*/
intretrievebyc(char*fname,char*key)
FILE*fp;
intc;
structrecords;
if((fp=fopen(fname,"r"))==NULL)
printf("Cantopenfile%s.\n",fname);
return0;
while(readrecord(fp,&s)!=0)
if(strcmp(s.code,key)==0)
displaystu(&s);
break;
fclose(fp);
if(c==0)
printf("Thestudent%sisnotinthefile%s.\n",key,fname);
return1;
main()
inti,j,n;
charc;
charbuf[BUFLEN];
FILE*fp;
structrecords;
clrscr();
printf("Pleaseinputthestudentsmarksrecordfilesname:");
scanf("%s",stuf);
if((fp=fopen(stuf,"r"))==NULL)
printf("Thefile%sdoesntexit,doyouwanttocreatit?(Y/N)",stuf);
getchar();
c=getchar();
if(c==Y||c==y)
fp=fopen(stuf,"w");
printf("Pleaseinputtherecordnumberyouwanttowritetothefile:");
scanf("%d",&n);
for(i=0;i
printf("Inputthestudentsname:");
scanf("%s",&s.name);
printf("Inputthestudentscode:");
scanf("%s",&s.code);
for(j=0;j
printf("Inputthe%smark:",schoolwork[j]);
scanf("%d",&s.marks[j]);
writerecord(fp,&s);
fclose(fp);
fclose(fp);
getchar();
/*clrscr();*/
puts("Nowyoucaninputacommandtomanagetherecords.");
puts("m:meanofthemarks.");
puts("t:totalofthemarks.");
puts("n:searchrecordbystudentsname.");
puts("c:searchrecordbystudentscode.");
puts("l:listalltherecords.");
puts("s:sortandlisttherecordsbythetotal.");
puts("q:quit!");
while(1)
puts("Pleaseinputcommand:");
scanf("%c",&c);/*输入选择命令*/
if(c==q||c==Q)
puts("\nThankyouforyourusing.");
break;/*q，结束程序运行*/
switch(c)
casem:/*计算平均分*/
caseM:
if((n=totalmark(stuf))==0)
puts("Error!");
break;
printf("\n");
for(i=0;i
printf("%-15ssaverageis:%.2f.\n",schoolwork[i],(float)total[i]/n);
break;
caset:/*计算总分*/
caseT:
if((n=totalmark(stuf))==0)
puts("Error!");
break;
printf("\n");
for(i=0;i
printf("%-15sstotalmarkis:%d.\n",schoolwork[i],total[i]);
break;
casen:/*按学生的姓名寻找记录*/
caseN:
printf("Pleaseinputthestudentsnameyouwanttosearch:");
scanf("%s",buf);
retrievebyn(stuf,buf);
break;
casec:/*按学生的学号寻找记录*/
caseC:
printf("Pleaseinputthestudentscodeyouwanttosearch:");
scanf("%s",buf);
retrievebyc(stuf,buf);
break;
casel:/*列出所有学生记录*/
caseL:
liststu(stuf);
break;
cases:/*按总分从高到低排列显示*/
caseS:
if((head=makelist(stuf))!=NULL)
displaylist(head);
break;
default:break;
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