学生成绩管理系统
作者：互联网
#include <stdio.h>
#include <windows.h>
#include <malloc.h>
#include <conio.h>
FILE *sco;
FILE *bsc;
void print_(){ //修饰
for( int i=0; i<110; i++ )
{
printf("*");
Sleep(10); //间隔输出
}
printf("\n");
}
void home_page() //主界面
{
system ( "color 5b" ); //背景颜色
print_(); //调用修饰函数
printf("%48c 学生管理系统\n",' '); //%45c ,' '输入空格
printf("%45c 1 查找\n",' ');
printf("%45c 2 添加\n",' ');
printf("%45c 3 删除\n",' ');
printf("%45c 4 修改\n",' ');
printf("%45c 5 浏览成绩\n",' ');
printf("%45c 6 浏览信息\n",' ');
printf("%45c 7 保存\n",' ');
printf("%45c 8 文件读取\n",' ');
printf("%45c 9 退出\n",' ');
print_();
printf("请选择:");
}
typedef char Str[100];
typedef struct Student_message //学生信息结构体
{
Str Name;
//char Name[20]; //姓名
Str Number;
//char Number[8]; //学号
Str Phone;
//char Phone[12]; //电话
Str Scholarship;
//char Scholarship[7]; //奖学金情况
struct Student_message *Next;
}Student_message,*_message;
typedef struct Student_score //学生成绩结构体
{
Str name; //姓名
Str Adv;
//char Adv[4]; //高数
Str Lin;
//char Lin[4]; //线代
Str Eng;
//char Eng[4]; //大英
Str Pro;
//char Pro[4]; //程序
struct Student_score *Next;
}Student_score,*_score;
// struct Student_score *Sco=0;
char *Filename1="学生信息.txt";
char *Filename2="学生成绩.txt";
_message Read_file1(char *filename1)
{
_message stu_temp;
_message stu_head = NULL;
bsc=fopen(filename1,"r");
if(!bsc)
{
printf("%s文件不存在!!!\n",filename1);
return stu_head;
}
while(!feof(bsc))
{
stu_temp = (_message)calloc(1,sizeof(Student_message));
fscanf(bsc,"%s %s %s %s\n",stu_temp->Name,stu_temp->Number,stu_temp->Phone,stu_temp->Scholarship);
stu_temp->Next=stu_head;
stu_head = stu_temp;
}
fclose(bsc); //关闭文件
printf("读取完毕\n");
return stu_head;
}
_score Read_file2(char *filename2)
{
_score stu_temp;
_score stu_head = NULL;
sco=fopen(filename2,"r");
if(!sco)
{
printf("%s文件不存在!!!\n",filename2);
return stu_head;
}
while(!feof(sco))
{
stu_temp = (_score)calloc(1,sizeof(Student_score));
fscanf(sco,"%s %s %s %s %s\n",stu_temp->name,stu_temp->Adv,stu_temp->Eng,stu_temp->Lin,stu_temp->Pro);
stu_temp->Next=stu_head;
stu_head = stu_temp;
}
fclose(sco); //关闭文件
printf("读取完毕\n");
return stu_head;
}
void Save_file1(char *filename1, _message mes_head) //保存信息至文件
{
_message stu_cur = mes_head;
if(!mes_head)
{
return;
}
if(!(bsc = fopen(filename1,"w")))
{
bsc = fopen(filename1,"a+");
}
while(stu_cur)
{
fprintf(bsc,"%s %s %s %s\n",stu_cur->Name,stu_cur->Number,stu_cur->Phone,stu_cur->Scholarship);
stu_cur = stu_cur->Next;
}
fclose(bsc);
printf("保存完毕\n");
}
void Save_file2(char *filename2, _score sco_head) //保存信息至文件
{
_score stu_cur = sco_head;
if(!sco_head)
{
return;
}
if(!(sco = fopen(filename2,"w")))
{
sco = fopen(filename2,"a+");
}
while(stu_cur)
{
fprintf(sco,"%s %s %s %s %s\n",stu_cur->name,stu_cur->Adv,stu_cur->Eng,stu_cur->Lin,stu_cur->Pro);
stu_cur = stu_cur->Next;
}
fclose(sco);
printf("保存完毕\n");
}
void Search_message(_message mes_head) //查找学生信息
{
_message stu_cur = mes_head;
Str msg;
if(!mes_head)
{
printf("\n当前无任何信息记录!!!\n");
return;
}
printf("\n输入要查找学生姓名: "),scanf("%s",msg);
while(stu_cur)
{
if(!strcmp(stu_cur->Name,msg))
{
printf("姓名: %s\n",stu_cur->Name);
printf("学号: %s\n",stu_cur->Number);
printf("电话: %s\n",stu_cur->Phone);
printf("奖学金信息: %s\n",stu_cur->Scholarship);
return;
}
stu_cur = stu_cur->Next;
}
printf("输入的信息不存在!!!\n");
}
void Search_score(_score sco_head) //查找学生信息
{
_score stu_cur = sco_head;
Str sco;
if(!sco_head)
{
printf("\n当前无任何信息记录!!!\n");
return;
}
printf("\n输入要查找学生姓名: "),scanf("%s",sco);
while(stu_cur)
{
if(!strcmp(stu_cur->name,sco))
{
printf("姓名: %s\n",stu_cur->name);
printf("高数: %s\n",stu_cur->Adv);
printf("大英: %s\n",stu_cur->Eng);
printf("线代: %s\n",stu_cur->Lin);
printf("程序: %s\n",stu_cur->Pro);
return;
}
stu_cur = stu_cur->Next;
}
printf("输入的信息不存在!!!\n");
}
_message Add_message(_message mes_head) //添加学生信息
{
_message stu_temp = (_message)calloc(1,sizeof(Student_message));
printf("\n姓名: "),scanf("%s",stu_temp->Name);
printf("学号: "),scanf("%s",stu_temp->Number);
printf("电话: "),scanf("%s",stu_temp->Phone);
printf("奖学金信息(若无请输入\"无\"): "),scanf("%s",stu_temp->Scholarship);
stu_temp->Next = mes_head;
return stu_temp;
}
_score Add_score(_score sco_head) //添加学生信息
{
_score stu_temp = (_score)calloc(1,sizeof(Student_score));
printf("\n姓名: "),scanf("%s",stu_temp->name);
printf("高数: "),scanf("%s",stu_temp->Adv);
printf("大英: "),scanf("%s",stu_temp->Eng);
printf("线代: "),scanf("%s",stu_temp->Lin);
printf("程序: "),scanf("%s",stu_temp->Pro);
stu_temp->Next = sco_head;
return stu_temp;
}
_message Delete_message(_message mes_head) //删除学生信息
{
_message stu_temp,stu_cur = mes_head;
Str msg;
if(!mes_head)
{
printf("\n当前无任何信息记录!!!\n");
return mes_head;
}
printf("\n请输入要删除的学生姓名: "),scanf("%s",msg);
if(!strcmp(mes_head->Name,msg))
{
stu_temp = mes_head;
mes_head = stu_temp->Next;
free(stu_temp);
printf("删除成功!!!\n");
return mes_head;
}
while(stu_cur->Next)
{
if(!strcmp(stu_cur->Next->Name,msg))
{
stu_temp = stu_cur->Next;
stu_cur->Next = stu_temp->Next;
free(stu_temp);
printf("删除成功!!!\n");
return mes_head;
}
stu_cur = stu_cur->Next;
}
printf("输入的信息不存在!!!\n");
return mes_head;
}
_score Delete_score(_score sco_head) //删除学生信息
{
_score stu_temp,stu_cur = sco_head;
Str sco;
if(!sco_head)
{
printf("\n当前无任何信息记录!!!\n");
return sco_head;
}
printf("\n请输入要删除的学生姓名: "),scanf("%s",sco);
if(!strcmp(sco_head->name,sco))
{
stu_temp = sco_head;
sco_head = stu_temp->Next;
free(stu_temp);
printf("删除成功!!!\n");
return sco_head;
}
while(stu_cur->Next)
{
if(!strcmp(stu_cur->Next->name,sco))
{
stu_temp = stu_cur->Next;
stu_cur->Next = stu_temp->Next;
free(stu_temp);
printf("删除成功!!!\n");
return sco_head;
}
stu_cur = stu_cur->Next;
}
printf("输入的信息不存在!!!\n");
return sco_head;
}
void Modify_message(_message mes_head) //修改学生信息
{
_message stu_cur = mes_head;
Str msg;
if(!mes_head)
{
printf("\n当前无任何信息记录!!!\n");
return;
}
printf("\n请输入要修改的学生姓名: "),scanf("%s",msg);
while(stu_cur)
{
if(!strcmp(stu_cur->Name,msg))
{
printf("请输入信息替换:\n\n");
printf("\n姓名: "),scanf("%s",stu_cur->Name);
printf("学号: "),scanf("%s",stu_cur->Number);
printf("电话: "),scanf("%s",stu_cur->Phone);
printf("奖学金信息(若无请输入\"无\"): "),scanf("%s",stu_cur->Scholarship);
return;
}
stu_cur = stu_cur->Next;
}
printf("输入的信息不存在!!!\n");
return;
}
void Modify_score(_score sco_head) //修改学生信息
{
_score stu_cur = sco_head;
Str sco;
if(!sco_head)
{
printf("\n当前无任何信息记录!!!\n");
return;
}
printf("\n请输入要修改的学生姓名: "),scanf("%s",sco);
while(stu_cur)
{
if(!strcmp(stu_cur->name,sco))
{
printf("请输入信息替换:\n\n");
printf("\n姓名: "),scanf("%s",stu_cur->name);
printf("高数: "),scanf("%s",stu_cur->Adv);
printf("大英: "),scanf("%s",stu_cur->Eng);
printf("线代: "),scanf("%s",stu_cur->Lin);
printf("程序: "),scanf("%s",stu_cur->Pro);
return;
}
stu_cur = stu_cur->Next;
}
printf("输入的信息不存在!!!\n");
return;
}
void Display_message(_message mes_head) //显示学生信息
{
_message mes_cur = mes_head;
if(!mes_head)
{
printf("\n当前无任何信息记录!!!\n");
return;
}
while(mes_cur)
{
printf("\n姓名: %s\n",mes_cur->Name);
printf("学号: %s\n",mes_cur->Number);
printf("电话: %s\n",mes_cur->Phone);
printf("奖学金信息: %s\n",mes_cur->Scholarship);
mes_cur = mes_cur->Next;
}
}
void Display_score(_score sco_head) //显示学生信息
{
_score sco_cur = sco_head;
if(!sco_head)
{
printf("\n当前无任何信息记录!!!\n");
return;
}
while(sco_cur)
{
printf("\n姓名: %s\n",sco_cur->name);
printf("高数: %s\n",sco_cur->Adv);
printf("大英: %s\n",sco_cur->Eng);
printf("线代: %s\n",sco_cur->Lin);
printf("程序: %s\n",sco_cur->Pro);
sco_cur = sco_cur->Next;
}
}
int main( int argc, char const *argv[] )
{
char choice;
_message mes_head = NULL;
_score sco_head = NULL;
while(1)
{
home_page(); //进入主页面
choice = getch();
system("cls");
switch(choice) //进行选择
{
case '1': Search_message(mes_head);
Search_score(sco_head);
break;
case '2': mes_head = Add_message(mes_head);
sco_head = Add_score(sco_head);
break;
case '3': mes_head = Delete_message(mes_head);
sco_head = Delete_score(sco_head);
break;
case '4': Modify_message(mes_head);
Modify_score(sco_head);
break;
case '5': Display_score(sco_head);
break;
case '6': Display_message(mes_head);
break;
case '7': Save_file1(Filename1,mes_head);
Save_file2(Filename2,sco_head);
break;
case '8': mes_head = Read_file1(Filename1);
sco_head = Read_file2(Filename2);
break;
case '9': exit(0);
break;
default: break;
}
}
return 0;
}
室友程序
主要功能：查找修改删除添加学生成绩，并能储存文件中。
大一期末大作业，学习编程以来第一次编这种稍微有点长的程序。从中也知道了码代码格式的重要性（看的时候比较舒服，也比较清晰）；以及中括号先打全的重要性，避免之后还要慢慢找；函数之类的拼写也同样需要注意。
在编程过程中要时刻保持头脑清晰，以免突然逻辑混乱不知道这个循环或者判断有什么作用。就像是写作文一样，要先构思，并且条理清晰。这时候注释就起了很大的作用，有时候回过头看前面的代码时，有些过程已经不知道起了什么作用，及时做好注释既可以方便自己也能让别人理解容易一点（虽然我目前没有这种习惯，只是偶尔注释一下自定义函数的作用）。
编程还是需要靠积累（偶尔码代码偶尔爽，一直码代码一直爽！），同时还要关注新技术的出现，不然很快就会像过气的电脑硬件一样被淘汰掉。
标签：head,cur,temp,管理系统,sco,学生,stu,printf,成绩 来源： https://www.cnblogs.com/xzy1656791578/p/10468224.html