C语言课程设计 最好弄个学生成绩统计系统吧 250-300行左右 还有流程图
2个程序也行 3个也行 加起来300行左右 还有流程图
改好了,代码如下!
#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
#include<conio.h>
typedef struct
{
char num[10];
char name[20];
int score;
}Student;
Student stu[80];
int menu_select()
{
char c;
do{
system("cls");
printf("\t\t \n");
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Search a Record |\n");
printf("\t\t | 7. Rebuild a Record|\n"); //增加代码
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-7):");
c=getchar();
}while(c<'0'||c>'7');
getchar();
return(c-'0');
}
/***********************增加函数模块*********************/
/* 函数功能:修改学生姓名,分数 */
/********************************************************/
int Rebuild(Student stud[],int n)
{
char name[20];
int score;
char num[10];
int flag=0;
printf("\t\t Please input the Rebuilded student`s number:");
scanf("%s",&num);
for(int i=0;i<n;i++)
{
if(strcmp(stu[i].num,num)==0)
{
flag=1;
printf("\t\t Please intput the rebuild student`s name:");
scanf("%s",name);
strcpy(stud[i].name,name);
printf("\t\t Please input the rebuild student`s score:");
scanf("%d",&score);
stud[i].score=score;
return flag;
}
}
return flag;
}
int Input(Student stud[],int n)
{
int i=0;
int j,temp=0;
int flag=1;
char sign='y',x[10];
while(sign!='n'&&sign!='N')
{
while(flag)
{
printf("\t\t\tstudent's num:");
scanf("\t\t\t%s",stud[n+i].num);
for(j=0;j<strlen(stud[n+i].num);j++)
{
if(stud[n+i].num[j]>='1'&&stud[n+i].num[j]<='9')
{
;
}
else{
flag=1;
break;
}
flag=0;
}
}
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x);
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign);
flag=1;
i++;
}
return(n+i);
}
void Display(Student stud[],int n)
{
int i;
printf("\t\t\t-----------------------------------\n");
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++)
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0)
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n)
{
int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++)
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{
strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n)
{
char x[10];
int flag=1;
int j;
while(flag)
{
printf("\t\t\tstudent's num:");
scanf("\t\t\t%s",stud[n].num);
for(j=0;j<strlen(stud[n].num);j++)
{
if(stud[n].num[j]>='1'&&stud[n].num[j]<='9')
{
;
}
else{
flag=1;
break;
}
flag=0;
}
}
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n);
printf("\t\t\tInsert Successed!\n");
return(n);
}
int Delete_a_record(Student stud[],int n)
{
char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:");
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++;
if(i==n)
{
printf("\t\t\tnot find!\n");
return(n);
}
for(j=i;j<n-1;j++)
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n");
return(n-1);
}
int Search_a_record(Student stud[],int n)
{
int j;
int flag=1;
char temp[10];
while(flag)
{
printf("\t\t\tInput student's num:");
scanf("\t\t\t%s",temp);
for(j=0;j<strlen(temp);j++)
{
if(temp[j]>='1'&&temp[j]<='9')
{
;
}
else{
flag=1;
break;
}
flag=0;
}
}
printf("\t\t\t-----------------------------------\n");
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(j=0;j<80;j++)
{
if(strcmp(temp,stud[j].num)==0)
{
printf("\t\t\t%-16s%-15s%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\t-----------------------------------\n");
}
}
return(n);
}
void main()
{
int x;
int n=0;
for(;;)
{
x=menu_select();
switch(x)
{
case 1:
printf("\t\t\tInput Records\n");
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n");
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n);
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n);
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n);
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tSearch a Record\n");
n=Search_a_record(stu,n);
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tRebuild a Record\n");
if(Rebuild(stu,n))
{
printf("\t\t Action successed! press any key return..");
getch();
}
else
{
printf("\t\t Sorry,no such student!\n");
printf("\t\t Press any key return..");
getch();
}
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n");
printf("\t\t\t");
system("pause");
exit(0);
}
}
}
#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
#include<conio.h>
typedef struct
{
char num[10];
char name[20];
int score;
}Student;
Student stu[80];
int menu_select()
{
char c;
do{
system("cls");
printf("\t\t \n");
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Search a Record |\n");
printf("\t\t | 7. Rebuild a Record|\n"); //增加代码
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-7):");
c=getchar();
}while(c<'0'||c>'7');
getchar();
return(c-'0');
}
/***********************增加函数模块*********************/
/* 函数功能:修改学生姓名,分数 */
/********************************************************/
int Rebuild(Student stud[],int n)
{
char name[20];
int score;
char num[10];
int flag=0;
printf("\t\t Please input the Rebuilded student`s number:");
scanf("%s",&num);
for(int i=0;i<n;i++)
{
if(strcmp(stu[i].num,num)==0)
{
flag=1;
printf("\t\t Please intput the rebuild student`s name:");
scanf("%s",name);
strcpy(stud[i].name,name);
printf("\t\t Please input the rebuild student`s score:");
scanf("%d",&score);
stud[i].score=score;
return flag;
}
}
return flag;
}
int Input(Student stud[],int n)
{
int i=0;
int j,temp=0;
int flag=1;
char sign='y',x[10];
while(sign!='n'&&sign!='N')
{
while(flag)
{
printf("\t\t\tstudent's num:");
scanf("\t\t\t%s",stud[n+i].num);
for(j=0;j<strlen(stud[n+i].num);j++)
{
if(stud[n+i].num[j]>='1'&&stud[n+i].num[j]<='9')
{
;
}
else{
flag=1;
break;
}
flag=0;
}
}
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x);
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign);
flag=1;
i++;
}
return(n+i);
}
void Display(Student stud[],int n)
{
int i;
printf("\t\t\t-----------------------------------\n");
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++)
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0)
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n)
{
int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++)
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{
strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n)
{
char x[10];
int flag=1;
int j;
while(flag)
{
printf("\t\t\tstudent's num:");
scanf("\t\t\t%s",stud[n].num);
for(j=0;j<strlen(stud[n].num);j++)
{
if(stud[n].num[j]>='1'&&stud[n].num[j]<='9')
{
;
}
else{
flag=1;
break;
}
flag=0;
}
}
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n);
printf("\t\t\tInsert Successed!\n");
return(n);
}
int Delete_a_record(Student stud[],int n)
{
char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:");
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++;
if(i==n)
{
printf("\t\t\tnot find!\n");
return(n);
}
for(j=i;j<n-1;j++)
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n");
return(n-1);
}
int Search_a_record(Student stud[],int n)
{
int j;
int flag=1;
char temp[10];
while(flag)
{
printf("\t\t\tInput student's num:");
scanf("\t\t\t%s",temp);
for(j=0;j<strlen(temp);j++)
{
if(temp[j]>='1'&&temp[j]<='9')
{
;
}
else{
flag=1;
break;
}
flag=0;
}
}
printf("\t\t\t-----------------------------------\n");
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(j=0;j<80;j++)
{
if(strcmp(temp,stud[j].num)==0)
{
printf("\t\t\t%-16s%-15s%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\t-----------------------------------\n");
}
}
return(n);
}
void main()
{
int x;
int n=0;
for(;;)
{
x=menu_select();
switch(x)
{
case 1:
printf("\t\t\tInput Records\n");
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n");
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n);
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n);
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n);
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tSearch a Record\n");
n=Search_a_record(stu,n);
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tRebuild a Record\n");
if(Rebuild(stu,n))
{
printf("\t\t Action successed! press any key return..");
getch();
}
else
{
printf("\t\t Sorry,no such student!\n");
printf("\t\t Press any key return..");
getch();
}
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n");
printf("\t\t\t");
system("pause");
exit(0);
}
}
}
温馨提示:答案为网友推荐,仅供参考
第1个回答 2009-03-02
How much would you pay?
第2个回答 2009-03-03
相关资料:
用C语言做一个:学生成绩统计系统
/*11.3.2 源程序*/
/***********xuesheng.c***********/
/******头文件(.h)***********/
#include "stdio.h" /*I/O函数*/
#include "stdlib.h" /*其它说明*/
#include "string.h" /*字符串函数*/
#include "conio.h" /*屏幕操作函数*/
#include "mem.h" /*内存操作函数*/
#include "ctype.h" /*字符操作函数*/
#include "alloc.h" /*动态地址分配函数*/
#define N 3 /*定义常数*/
typedef struct z1 /*定义数据结构*/
{
char no[11];
char name[15];
int score[N];
float sum;
float average;
int order;
struct z1 *next;
}STUDENT;
/*以下是函数原型*/
STUDENT *init(); /*初始化函数*/
STUDENT *create(); /*创建链表*/
STUDENT *delete(STUDENT *h); /*删除记录*/
void print(STUDENT *h); /* 显示所有记录*/
void search(STUDENT *h); /*查找*/
void save(STUDENT *h); /*保存*/
STUDENT *load(); /*读入记录*/
void computer(STUDENT *h); /*计算总分和均分*/
STUDENT *insert(STUDENT *h); /*插入记录*/
void append(); /*追加记录*/
void copy(); /*复制文件*/
STUDENT *sort(STUDENT *h); /*排序*/
STUDENT *index(STUDENT *h); /*索引*/
void total(STUDENT *h); /*分类合计*/
int menu_select(); /*菜单函数*/
/******主函数开始*******/
main()
{
int i;
STUDENT *head; /*链表定义头指针*/
head=init(); /*初始化链表*/
clrscr(); /*清屏*/
for(;;) /*无限循环*/
{
switch(menu_select()) /*调用主菜单函数,返回值整数作开关语句的条件*/
{ /*值不同,执行的函数不同,break 不能省略*/
case 0:head=init();break; /*执行初始化*/
case 1:head=create();break; /*创建链表*/
case 2:head=delete(head);break; /*删除记录*/
case 3:print(head);break; /*显示全部记录*/
case 4:search(head);break; /*查找记录*/
case 5:save(head);break; /*保存文件*/
case 6:head=load(); break; /*读文件*/
case 7:computer(head);break; /*计算总分和均分*/
case 8:head=insert(head); break; /*插入记录*/
case 9:copy();break; /*复制文件*/
case 10:head=sort(head);break; /*排序*/
case 11:append();break; /*追加记录*/
case 12:head=index(head);break; /*索引*/
case 13:total(head);break; /*分类合计*/
case 14:exit(0); /*如菜单返回值为14程序结束*/
}
}
}
/*菜单函数,返回值为整数*/
menu_select()
{
char *menu[]={"***************MENU***************", /*定义菜单字符串数组*/
" 0. init list", /*初始化*/
" 1. Enter list", /*输入记录*/
" 2. Delete a record from list", /*从表中删除记录*/
" 3. print list ", /*显示单链表中所有记录*/
" 4. Search record on name", /*按照姓名查找记录*/
" 5. Save the file", /*将单链表中记录保存到文件中*/
" 6. Load the file", /*从文件中读入记录*/
" 7. compute the score", /*计算所有学生的总分和均分*/
" 8. insert record to list ", /*插入记录到表中*/
" 9. copy the file to new file", /*复制文件*/
" 10. sort to make new file", /*排序*/
" 11. append record to file", /*追加记录到文件中*/
" 12. index on nomber", /*索引*/
" 13. total on nomber", /*分类合计*/
" 14. Quit"}; /*退出*/
char s[3]; /*以字符形式保存选择号*/
int c,i; /*定义整形变量*/
gotoxy(1,25); /*移动光标*/
printf("press any key enter menu......\n"); /*压任一键进入主菜单*/
getch(); /*输入任一键*/
clrscr(); /*清屏幕*/
gotoxy(1,1); /*移动光标*/
textcolor(YELLOW); /*设置文本显示颜色为黄色*/
textbackground(BLUE); /*设置背景颜色为蓝色*/
gotoxy(10,2); /*移动光标*/
putch(0xc9); /*输出左上角边框┏*/
for(i=1;i<44;i++)
putch(0xcd); /*输出上边框水平线*/
putch(0xbb); /*输出右上角边框 ┓*/
for(i=3;i<20;i++)
{
gotoxy(10,i);putch(0xba); /*输出左垂直线*/
gotoxy(54,i);putch(0xba);
} /*输出右垂直线*/
gotoxy(10,20);putch(0xc8); /*输出左上角边框┗*/
for(i=1;i<44;i++)
putch(0xcd); /*输出下边框水平线*/
putch(0xbc); /*输出右下角边框┛*/
window(11,3,53,19); /* 制作显示菜单的窗口,大小根据菜单条数设计*/
clrscr(); /*清屏*/
for(i=0;i<16;i++) /*输出主菜单数组*/
{
gotoxy(10,i+1);
cprintf("%s",menu);
}
textbackground(BLACK); /*设置背景颜色为黑色*/
window(1,1,80,25); /*恢复原窗口大小*/
gotoxy(10,21); /*移动光标*/
do{
printf("\n Enter you choice(0~14):"); /*在菜单窗口外显示提示信息*/
scanf("%s",s); /*输入选择项*/
c=atoi(s); /*将输入的字符串转化为整形数*/
}while(c<0||c>14); /*选择项不在0~14之间重输*/
return c; /*返回选择项,主程序根据该数调用相应的函数*/
}
STUDENT *init()
{
return NULL;
}
/*创建链表*/
STUDENT *create()
{
int i; int s;
STUDENT *h=NULL,*info; /* STUDENT指向结构体的指针*/
for(;;)
{
info=(STUDENT *)malloc(sizeof(STUDENT)); /*申请空间*/
if(!info) /*如果指针info为空*/
{
printf("\nout of memory"); /*输出内存溢出*/
return NULL; /*返回空指针*/
}
inputs("enter no:",info->no,11); /*输入学号并校验*/
if(info->no[0]=='@') break; /*如果学号首字符为@则结束输入*/
inputs("enter name:",info->name,15); /*输入姓名,并进行校验*/
printf("please input %d score \n",N); /*提示开始输入成绩*/
s=0; /*计算每个学生的总分,初值为0*/
for(i=0;i<N;i++) /*N门课程循环N次*/
{
do{
printf("score%d:",i+1); /*提示输入第几门课程*/
scanf("%d",&info->score); /*输入成绩*/
if(info->score>100||info->score<0) /*确保成绩在0~100之间*/
printf("bad data,repeat input\n"); /*出错提示信息*/
}while(info->score>100||info->score<0);
s=s+info->score; /*累加各门课程成绩*/
}
info->sum=s; /*将总分保存*/
info->average=(float)s/N; /*求出平均值*/
info->order=0; /*未排序前此值为0*/
info->next=h; /*将头结点做为新输入结点的后继结点*/
h=info; /*新输入结点为新的头结点*/
}
return(h); /*返回头指针*/
}
/*输入字符串,并进行长度验证*/
inputs(char *prompt, char *s, int count)
{
char p[255];
do{
printf(prompt); /*显示提示信息*/
scanf("%s",p); /*输入字符串*/
if(strlen(p)>count)printf("\n too long! \n"); /*进行长度校验,超过count值重输入*/
}while(strlen(p)>count);
strcpy(s,p); /*将输入的字符串拷贝到字符串s中*/
}
/*输出链表中结点信息*/
void print(STUDENT *h)
{
int i=0; /* 统计记录条数*/
STUDENT *p; /*移动指针*/
clrscr(); /*清屏*/
p=h; /*初值为头指针*/
printf("\n\n\n****************************STUDENT********************************\n");
printf("|rec|nO | name | sc1| sc2| sc3| sum | ave |order|\n");
printf("|---|----------|---------------|----|----|----|--------|-------|-----|\n");
while(p!=NULL)
{
i++;
printf("|%3d |%-10s|%-15s|%4d|%4d|%4d| %4.2f | %4.2f | %3d |\n", i, p->no,p->name,p->score[0],p->score[1],
p->score[2],p->sum,p->average,p->order);
p=p->next;
}
printf("**********************************end*********************************\n");
}
/*删除记录*/
STUDENT *delete(STUDENT *h)
{
STUDENT *p,*q; /*p为查找到要删除的结点指针,q为其前驱指针*/
char s[11]; /*存放学号*/
clrscr(); /*清屏*/
printf("please deleted no\n"); /*显示提示信息*/
scanf("%s",s); /*输入要删除记录的学号*/
q=p=h; /*给q和p赋初值头指针*/
while(strcmp(p->no,s)&&p!=NULL) /*当记录的学号不是要找的,或指针不为空时*/
{
q=p; /*将p指针值赋给q作为p的前驱指针*/
p=p->next; /*将p指针指向下一条记录*/
}
if(p==NULL) /*如果p为空,说明链表中没有该结点*/
printf("\nlist no %s student\n",s);
else /*p不为空,显示找到的记录信息*/
{
printf("*****************************have found***************************\n");
printf("|no | name | sc1| sc2| sc3| sum | ave |order|\n");
printf("|----------|---------------|----|----|----|--------|-------|-----|\n");
printf("|%-10s|%-15s|%4d|%4d|%4d| %4.2f | %4.2f | %3d |\n", p->no,
p->name,p->score[0],p->score[1],p->score[2],p->sum,
p->average,p->order);
printf("********************************end*******************************\n");
getch(); /*压任一键后,开始删除*/
if(p==h) /*如果p==h,说明被删结点是头结点*/
h=p->next; /*修改头指针指向下一条记录*/
else
q->next=p->next; /*不是头指针,将p的后继结点作为q的后继结点*/
free(p); /*释放p所指结点空间*/
printf("\n have deleted No %s student\n",s);
printf("Don't forget save\n");/*提示删除后不要忘记保存文件*/
}
return(h); /*返回头指针*/
}
其他相关:
统计学生成绩源代码C语言描述
仅供参考,请自借鉴
希望对您有帮助
用C语言做一个:学生成绩统计系统
/*11.3.2 源程序*/
/***********xuesheng.c***********/
/******头文件(.h)***********/
#include "stdio.h" /*I/O函数*/
#include "stdlib.h" /*其它说明*/
#include "string.h" /*字符串函数*/
#include "conio.h" /*屏幕操作函数*/
#include "mem.h" /*内存操作函数*/
#include "ctype.h" /*字符操作函数*/
#include "alloc.h" /*动态地址分配函数*/
#define N 3 /*定义常数*/
typedef struct z1 /*定义数据结构*/
{
char no[11];
char name[15];
int score[N];
float sum;
float average;
int order;
struct z1 *next;
}STUDENT;
/*以下是函数原型*/
STUDENT *init(); /*初始化函数*/
STUDENT *create(); /*创建链表*/
STUDENT *delete(STUDENT *h); /*删除记录*/
void print(STUDENT *h); /* 显示所有记录*/
void search(STUDENT *h); /*查找*/
void save(STUDENT *h); /*保存*/
STUDENT *load(); /*读入记录*/
void computer(STUDENT *h); /*计算总分和均分*/
STUDENT *insert(STUDENT *h); /*插入记录*/
void append(); /*追加记录*/
void copy(); /*复制文件*/
STUDENT *sort(STUDENT *h); /*排序*/
STUDENT *index(STUDENT *h); /*索引*/
void total(STUDENT *h); /*分类合计*/
int menu_select(); /*菜单函数*/
/******主函数开始*******/
main()
{
int i;
STUDENT *head; /*链表定义头指针*/
head=init(); /*初始化链表*/
clrscr(); /*清屏*/
for(;;) /*无限循环*/
{
switch(menu_select()) /*调用主菜单函数,返回值整数作开关语句的条件*/
{ /*值不同,执行的函数不同,break 不能省略*/
case 0:head=init();break; /*执行初始化*/
case 1:head=create();break; /*创建链表*/
case 2:head=delete(head);break; /*删除记录*/
case 3:print(head);break; /*显示全部记录*/
case 4:search(head);break; /*查找记录*/
case 5:save(head);break; /*保存文件*/
case 6:head=load(); break; /*读文件*/
case 7:computer(head);break; /*计算总分和均分*/
case 8:head=insert(head); break; /*插入记录*/
case 9:copy();break; /*复制文件*/
case 10:head=sort(head);break; /*排序*/
case 11:append();break; /*追加记录*/
case 12:head=index(head);break; /*索引*/
case 13:total(head);break; /*分类合计*/
case 14:exit(0); /*如菜单返回值为14程序结束*/
}
}
}
/*菜单函数,返回值为整数*/
menu_select()
{
char *menu[]={"***************MENU***************", /*定义菜单字符串数组*/
" 0. init list", /*初始化*/
" 1. Enter list", /*输入记录*/
" 2. Delete a record from list", /*从表中删除记录*/
" 3. print list ", /*显示单链表中所有记录*/
" 4. Search record on name", /*按照姓名查找记录*/
" 5. Save the file", /*将单链表中记录保存到文件中*/
" 6. Load the file", /*从文件中读入记录*/
" 7. compute the score", /*计算所有学生的总分和均分*/
" 8. insert record to list ", /*插入记录到表中*/
" 9. copy the file to new file", /*复制文件*/
" 10. sort to make new file", /*排序*/
" 11. append record to file", /*追加记录到文件中*/
" 12. index on nomber", /*索引*/
" 13. total on nomber", /*分类合计*/
" 14. Quit"}; /*退出*/
char s[3]; /*以字符形式保存选择号*/
int c,i; /*定义整形变量*/
gotoxy(1,25); /*移动光标*/
printf("press any key enter menu......\n"); /*压任一键进入主菜单*/
getch(); /*输入任一键*/
clrscr(); /*清屏幕*/
gotoxy(1,1); /*移动光标*/
textcolor(YELLOW); /*设置文本显示颜色为黄色*/
textbackground(BLUE); /*设置背景颜色为蓝色*/
gotoxy(10,2); /*移动光标*/
putch(0xc9); /*输出左上角边框┏*/
for(i=1;i<44;i++)
putch(0xcd); /*输出上边框水平线*/
putch(0xbb); /*输出右上角边框 ┓*/
for(i=3;i<20;i++)
{
gotoxy(10,i);putch(0xba); /*输出左垂直线*/
gotoxy(54,i);putch(0xba);
} /*输出右垂直线*/
gotoxy(10,20);putch(0xc8); /*输出左上角边框┗*/
for(i=1;i<44;i++)
putch(0xcd); /*输出下边框水平线*/
putch(0xbc); /*输出右下角边框┛*/
window(11,3,53,19); /* 制作显示菜单的窗口,大小根据菜单条数设计*/
clrscr(); /*清屏*/
for(i=0;i<16;i++) /*输出主菜单数组*/
{
gotoxy(10,i+1);
cprintf("%s",menu);
}
textbackground(BLACK); /*设置背景颜色为黑色*/
window(1,1,80,25); /*恢复原窗口大小*/
gotoxy(10,21); /*移动光标*/
do{
printf("\n Enter you choice(0~14):"); /*在菜单窗口外显示提示信息*/
scanf("%s",s); /*输入选择项*/
c=atoi(s); /*将输入的字符串转化为整形数*/
}while(c<0||c>14); /*选择项不在0~14之间重输*/
return c; /*返回选择项,主程序根据该数调用相应的函数*/
}
STUDENT *init()
{
return NULL;
}
/*创建链表*/
STUDENT *create()
{
int i; int s;
STUDENT *h=NULL,*info; /* STUDENT指向结构体的指针*/
for(;;)
{
info=(STUDENT *)malloc(sizeof(STUDENT)); /*申请空间*/
if(!info) /*如果指针info为空*/
{
printf("\nout of memory"); /*输出内存溢出*/
return NULL; /*返回空指针*/
}
inputs("enter no:",info->no,11); /*输入学号并校验*/
if(info->no[0]=='@') break; /*如果学号首字符为@则结束输入*/
inputs("enter name:",info->name,15); /*输入姓名,并进行校验*/
printf("please input %d score \n",N); /*提示开始输入成绩*/
s=0; /*计算每个学生的总分,初值为0*/
for(i=0;i<N;i++) /*N门课程循环N次*/
{
do{
printf("score%d:",i+1); /*提示输入第几门课程*/
scanf("%d",&info->score); /*输入成绩*/
if(info->score>100||info->score<0) /*确保成绩在0~100之间*/
printf("bad data,repeat input\n"); /*出错提示信息*/
}while(info->score>100||info->score<0);
s=s+info->score; /*累加各门课程成绩*/
}
info->sum=s; /*将总分保存*/
info->average=(float)s/N; /*求出平均值*/
info->order=0; /*未排序前此值为0*/
info->next=h; /*将头结点做为新输入结点的后继结点*/
h=info; /*新输入结点为新的头结点*/
}
return(h); /*返回头指针*/
}
/*输入字符串,并进行长度验证*/
inputs(char *prompt, char *s, int count)
{
char p[255];
do{
printf(prompt); /*显示提示信息*/
scanf("%s",p); /*输入字符串*/
if(strlen(p)>count)printf("\n too long! \n"); /*进行长度校验,超过count值重输入*/
}while(strlen(p)>count);
strcpy(s,p); /*将输入的字符串拷贝到字符串s中*/
}
/*输出链表中结点信息*/
void print(STUDENT *h)
{
int i=0; /* 统计记录条数*/
STUDENT *p; /*移动指针*/
clrscr(); /*清屏*/
p=h; /*初值为头指针*/
printf("\n\n\n****************************STUDENT********************************\n");
printf("|rec|nO | name | sc1| sc2| sc3| sum | ave |order|\n");
printf("|---|----------|---------------|----|----|----|--------|-------|-----|\n");
while(p!=NULL)
{
i++;
printf("|%3d |%-10s|%-15s|%4d|%4d|%4d| %4.2f | %4.2f | %3d |\n", i, p->no,p->name,p->score[0],p->score[1],
p->score[2],p->sum,p->average,p->order);
p=p->next;
}
printf("**********************************end*********************************\n");
}
/*删除记录*/
STUDENT *delete(STUDENT *h)
{
STUDENT *p,*q; /*p为查找到要删除的结点指针,q为其前驱指针*/
char s[11]; /*存放学号*/
clrscr(); /*清屏*/
printf("please deleted no\n"); /*显示提示信息*/
scanf("%s",s); /*输入要删除记录的学号*/
q=p=h; /*给q和p赋初值头指针*/
while(strcmp(p->no,s)&&p!=NULL) /*当记录的学号不是要找的,或指针不为空时*/
{
q=p; /*将p指针值赋给q作为p的前驱指针*/
p=p->next; /*将p指针指向下一条记录*/
}
if(p==NULL) /*如果p为空,说明链表中没有该结点*/
printf("\nlist no %s student\n",s);
else /*p不为空,显示找到的记录信息*/
{
printf("*****************************have found***************************\n");
printf("|no | name | sc1| sc2| sc3| sum | ave |order|\n");
printf("|----------|---------------|----|----|----|--------|-------|-----|\n");
printf("|%-10s|%-15s|%4d|%4d|%4d| %4.2f | %4.2f | %3d |\n", p->no,
p->name,p->score[0],p->score[1],p->score[2],p->sum,
p->average,p->order);
printf("********************************end*******************************\n");
getch(); /*压任一键后,开始删除*/
if(p==h) /*如果p==h,说明被删结点是头结点*/
h=p->next; /*修改头指针指向下一条记录*/
else
q->next=p->next; /*不是头指针,将p的后继结点作为q的后继结点*/
free(p); /*释放p所指结点空间*/
printf("\n have deleted No %s student\n",s);
printf("Don't forget save\n");/*提示删除后不要忘记保存文件*/
}
return(h); /*返回头指针*/
}
其他相关:
统计学生成绩源代码C语言描述
仅供参考,请自借鉴
希望对您有帮助