C语言课程设计 学生成绩管理系统

printf(\ printf(\ p1=p1->next; }

return p1; }

void insert() /*通过比较学号来插入数据的函数*/ { stu *p1,*p3,*p2; char ch; p1=head;

p3=(stu *)malloc(sizeof(stu));

p3->next=NULL;

if(head==NULL){ head=p3; return;} cin(p3);

while(p1!=NULL&&(p1->numnum)) /*通过学号的比较来插入*/ { p2=p1;p1=p1->next;}

if(p2==head) {p3->next=head; head=p3; return;} p3->next=p1; p2->next=p3; }

find(stu *p2) /*通过姓名查找查看数据的函数*/ { char name[20]; int b=0;

printf(\通过姓名查看*/ scanf(\ while(p2!=NULL)

{if(strcmp(name,p2->name)==0) {

printf(\ printf(\ printf(\ printf(\ printf(\

printf(\ printf(\ printf(\

printf(\ printf(\

b=1; }

else if(b==0)

printf(\ p2=p2->next; }

if(b==1) {

print();

printf(\ else

{print();

printf(\

} }

void caverage() /*求各学生语文平均分、最高和最低分成绩的函数*/

{ stu *p1; int i;

float max=0.0,min=200.0; float sum=0.0,aver=0; p1=head; if(p1==NULL)

printf(\ else

{for(i=0;p1!=NULL;i++,p1=p1->next) sum+=p1->chinese; aver=sum/i;

p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) {if(maxchinese) max=p1->chinese; } p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) if(min>p1->chinese)

min=p1->chinese; }

printf(\ printf(\ printf(\ }

void maverage() /*求各学生数学平均分、最高和最低分成绩的函数*/

{ stu *p1; int i;

float max=0.0,min=200.0; float sum=0.0,aver=0; p1=head; if(p1==NULL)

printf(\ else

{for(i=0;p1!=NULL;i++,p1=p1->next) sum+=p1->mathematic; aver=sum/i;

p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) {if(maxmathematic) max=p1->mathematic; } p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) if(min>p1->mathematic) min=p1->mathematic; }

printf(\ printf(\ printf(\ }

void eaverage() /*求各学生英语平均分、最高和最低分成绩的函数*/ { stu *p1; int i;

float max=0.0,min=200.0; float sum=0.0,aver=0;

p1=head; if(p1==NULL)

printf(\ else

{for(i=0;p1!=NULL;i++,p1=p1->next) sum+=p1->english; aver=sum/i;

p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) {if(maxenglish) max=p1->english; } p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) if(min>p1->english) min=p1->english; }

printf(\ printf(\ printf(\ }

void comaverage() /*求各学生计算机平均分、最高和最低分成绩的函数*/ { stu *p1; int i;

float max=0.0,min=200.0; float sum=0.0,aver=0; p1=head; if(p1==NULL)

printf(\ else

{for(i=0;p1!=NULL;i++,p1=p1->next) sum+=p1->computer; aver=sum/i;

p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next) {if(maxcomputer) max=p1->computer; } p1=head;

for(i=0;p1!=NULL;i++,p1=p1->next)