student.c

这是过去自己编写的一个初级Dos程序

/*Student.c*/
#include <dos.h>
#include <bios.h>
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <mem.h>
#include <ctype.h>
#include <alloc.h>
#include "spclk.h"
#include "start.c"
#include "clock.c"

#define LEFT 75
#define RIGHT 77
#define DOWN 80
#define UP 72
#define SPACE 32
#define ESC 27
#define ENTER 13
#define Backspace 8
#define ALT_F 33
#define ALT_O 24
#define ALT_Q 16
#define ALT_H 35
#define ALT_X 45
#define F1 59
#define F2 60
#define F3 61
#define F4 62
#define F5 63
#define F6 64
#define F7 65
#define F8 66
#define F9 67
#define F10 68
#define N 3

int key;
int textx,texty;

struct menustruct
{
	char name[10];
	char str[10][20];
	int n;
}ml[4];

typedef struct z1
{
	char no[11];
	char name[15];
	int score[N];
	float sum;
	float average;
	int order;
	struct z1 *next;
 }STUDENT;

STUDENT  *init();
STUDENT *load();
STUDENT *create();
STUDENT *delete(STUDENT *h);
STUDENT *insert(STUDENT *h);
STUDENT *update(STUDENT *h);
STUDENT *indexID(STUDENT *h);
STUDENT *indexGrades(STUDENT *h);
STUDENT *indexSUM(STUDENT *h);
STUDENT *indexAVERAGE(STUDENT *h);

char save[4096];
char c[4096];
char Fuleft[4096];
char Fuleft1[4096];
char Fulright[4096];
char Nuleft[4096];
char Nuright[4096];
char Nuhint[4096];
char ssmenu[4096];
char infow[4096];
char clockback[4096];
int i,j;

void Menu();
void Selectitem();
void DrawSelectitem();
void BlackText(int x,int y,char *z);
void RedText(int x,int y,char *z);
void Run();
void DrawMl(int n);
void MoveMl(int n,int x);
void Enter(int m,int n);
void savefile(STUDENT *h);
void saveend(STUDENT *h);
void print(STUDENT *h);
void calculate(STUDENT *h);
void searchID(STUDENT *h);
void searchName(STUDENT *h);
void searchGrades(STUDENT *h);
void saveChange(STUDENT *h);
void copy();
void Hint(int n,int x);
void Help();
void Ver();
void Startinfo();
void ClrScr();
void DrawFrame(int left,int up,int right,int down,int textcolor,int backgroundcolor);

STUDENT *head=NULL;

void main(void)
{
	start();
	Menu();
	Startinfo();
	Run();
}

void Menu()
{
	system("cls"); 
	textbackground(BLUE);
	window(1,1,25,80);
	clrscr();
	textx=3;
	texty=2;
	gotoxy(1,2);
	printf("%c",213);
	for(i=0;i<38;i++)
		printf("%c",205);
	printf("%c",209);
	printf("%c",209);
	for(i=0;i<38;i++)
		printf("%c",205);
	printf("%c",184);
	for(i=3;i<=20;i++)
	{
		gotoxy(1,i);
		printf("%c",179);
		gotoxy(40,i);
		printf("%c",179);
		gotoxy(41,i);
		printf("%c",179);
		gotoxy(80,i);
		printf("%c",179);
	}
	printf("%c",195);
	for(i=0;i<36;i++)
		printf("%c",196);
	cprintf(" Hint ");
	for(i=0;i<36;i++)
		printf("%c",196);
	printf("%c",180);
	for(i=22;i<24;i++)
	{
		gotoxy(1,i);
		printf("%c",179);
		gotoxy(80,i);
		printf("%c",179);
	}
	printf("%c",192);
	for(i=0;i<78;i++)
		printf("%c",196);
	printf("%c",217);
	gotoxy(1,1);
	textcolor(7);
	for(i=0;i<80;i++)
		cprintf("%c",219);
	Selectitem();
	DrawSelectitem();
	gettext(2,3,78,23,c);
	gettext(2,3,39,20,Nuleft);
	gettext(42,3,79,20,Nuright);
	gettext(2,22,79,23,Nuhint);
	gettext(1,1,80,25,clockback);
}
/*define menu*/
void Selectitem()
{
	strcpy(ml[0].name,"File");
	strcpy(ml[0].str[0],"Load               ");
	strcpy(ml[0].str[1],"New                ");
	strcpy(ml[0].str[2],"Save               ");
	strcpy(ml[0].str[3],"Copy file          ");
	strcpy(ml[0].str[4],"Exit          Alt-X");
	ml[0].n=5;
	strcpy(ml[1].name,"Operate");
	strcpy(ml[1].str[0],"Add              F4");
	strcpy(ml[1].str[1],"Update           F5");
	strcpy(ml[1].str[2],"Del              F6");
	strcpy(ml[1].str[3],"Calculate          ");
	strcpy(ml[1].str[4],"Index on ID        ");
	strcpy(ml[1].str[5],"Index on scores    ");
	strcpy(ml[1].str[6],"Index on sum&ave   ");
	ml[1].n=7;
	strcpy(ml[2].name,"Query");
	strcpy(ml[2].str[0],"By ID            F7");
	strcpy(ml[2].str[1],"By name          F8");
	strcpy(ml[2].str[2],"By score         F9");
	strcpy(ml[2].str[3],"All             F10");
	ml[2].n=4;
	strcpy(ml[3].name,"Help");
	strcpy(ml[3].str[0],"This System      F1");
	strcpy(ml[3].str[1],"Ver                ");
	strcpy(ml[3].str[2],"Clock            F2");
	ml[3].n=3;
}
/*show main menu*/
void DrawSelectitem()
{
	for(i=0;i<4;i++)
		RedText(i,1,ml[i].name);
}
/*original menu*/
void RedText(int x,int y,char *z)
{
	textbackground(7);
	gotoxy(3+x*15,y);
	for(j=0;z[j];j++)
	{
		if(j==0)
			textcolor(RED);
		else
			textcolor(BLACK);
		cprintf("%c",z[j]);
	}
}
/*selected menu*/
void BlackText(int x,int y,char *z)
{
	textbackground(0);
	textcolor(15);
	gotoxy(3+15*x,y);
	cputs(z);
	gotoxy(2,22);
	Hint(x,y);
}
/*key control*/
void Run()
{
	while(1)
	{
		gotoxy(texty,textx);
		key=specialkey();
		switch(key)
		{
			case ALT_X:saveend(head);exit(1);
			case ALT_F:
			case ESC: DrawMl(0);break;
			case F1:Help();break;
			case F4:head=insert(head);puttext(1,1,80,25,save);print(head);break;
			case F5:head=update(head);print(head);break;
			case F6:head=delete(head);print(head);break;
			case F7:searchID(head);break;
			case F8:searchName(head);break;
			case F9:searchGrades(head);break;
			case F10:print(head);break;
			case F2:clock();puttext(1,1,80,25,save);break;
			case ALT_O: DrawMl(1);break;
			case ALT_Q: DrawMl(2);break;
			case ALT_H: DrawMl(3);
			case UP:
				{
					if(textx==3)
						textx=23;
					textx--;
					gotoxy(texty,textx);
				}break;
			case DOWN:
				{
					if(textx==23)
						textx=3;
					textx++;
					gotoxy(texty,textx);
				}break;
			case LEFT:
				{
					if(texty==2)
						texty=79;
					texty--;
					gotoxy(texty,textx);
				}break;
			case RIGHT:
				{
					if(texty==79)
						texty=2;
					texty++;
					gotoxy(texty,textx);
				}break;
			case ENTER:
				{
					if(textx==23)
						continue;
					textx++;
					texty=2;
					gotoxy(texty,textx);
				}break;
			default :
				{
				}
		}
	}
}
/*draw frame*/
void DrawFrame(int l,int u,int r,int d,int tcolor,int bcolor)
{
	textbackground(bcolor);
	textcolor(bcolor);
	for(i=l;i<=r;i++)
	{
		for(j=u;j<=d;j++)
		{
			gotoxy(i,j);
			printf("%c",219);
		}
	}
	textcolor(tcolor);
	for(i=u+1;i<d;i++)
	{
		gotoxy(l,i);
		cprintf("%c",179);
		gotoxy(r,i);
		cprintf("%c",179);
	}
	for(i=l+1;i<r;i++)
	{
		gotoxy(i,u);
		cprintf("%c",196);
		gotoxy(i,d);
		cprintf("%c",196);
	}
	gotoxy(l,u);
	cprintf("%c",218);
	gotoxy(r,u);
	cprintf("%c",191);
	gotoxy(l,d);
	cprintf("%c",192);
	gotoxy(r,d);
	cprintf("%c",217);
}
/*show submenu*/
void DrawMl(int n)
{
	gettext(1,1,80,25,save);
	BlackText(n,1,ml[n].name);
	DrawFrame(3+15*n-1,2,3+15*n+19,3+ml[n].n,0,7);
	for(i=3;i<3+ml[n].n;i++)
	{
		if(i==3)
			BlackText(n,i,ml[n].str[i-3]);
		else
			RedText(n,i,ml[n].str[i-3]);
	}
	gettext(3+15*n-1,2,3+15*n+19,3+ml[n].n,ssmenu);
	gotoxy(79,1);
	MoveMl(n,3);
}
/*menu control*/
void MoveMl(int n,int x)
{
	int flag=1;
	while(flag)
	{
		gotoxy(79,1);
		key=specialkey();
		gotoxy(79,1);
		switch(key)
		{
			case ESC:
				puttext(1,1,80,25,save);
				flag=0;
				break;
			case LEFT:
				puttext(1,1,80,25,save);
				if(n==0)
					DrawMl(3);
				else
					DrawMl(n-1);
				flag=0;
				break;
			case RIGHT:
				puttext(1,1,80,25,save);
				if(n==3)
					DrawMl(0);
				else
					DrawMl(n+1);
				flag=0;
				break;
			case UP:
				RedText(n,x,ml[n].str[x-3]);
				if(x==3)
					x=3+ml[n].n-1;
				else
					x--;
				BlackText(n,x,ml[n].str[x-3]);
				flag=1;
				break;
			case DOWN:
				RedText(n,x,ml[n].str[x-3]);
				if(x==(3+ml[n].n-1))
					x=3;
				else
					x++;
				BlackText(n,x,ml[n].str[x-3]);
				flag=1;
				break;
			case ENTER:
				puttext(1,1,80,25,save);
				Enter(n,x-3);
				flag=0;
				break;
		}
		gotoxy(79,1);
	}
}

void Startinfo()
{
	DrawFrame(21,9,61,16,BLACK,BLACK);
	DrawFrame(20,8,60,15,WHITE,3);
	gotoxy(21,9);
	cprintf("                                       ");
	gotoxy(21,10);
	cprintf("           Welcome to S.M.S            ");
	gotoxy(21,11);
	cprintf(" Please press Alt-F to start           ");
	gotoxy(21,12);
	cprintf(" Some messages will be appear when you ");
	gotoxy(21,13);
	cprintf(" select a menu                         ");
	gotoxy(21,14);
	cprintf("                                       ");
	getch();
	puttext(1,1,80,25,clockback);
}

/*show hint*/
void Hint(int n,int x)
{
	switch(n)
	{
		case 0:switch(x)
			{
				case 3:printf("Load a file, and print data.                                  ");break;
				case 4:printf("Input data before saving file.                                ");break;
				case 5:printf("Save the file.                                                ");break;
				case 6:printf("Copy data from one file to another one.                       ");break;
				case 7:printf("Exit the Student Management System.                           ");break;
			}break;
		case 1:switch(x)
			{
				case 3:printf("Add a student record.                                         ");break;
				case 4:printf("Modify existing records.                                      ");break;
				case 5:printf("Delete a existing record.                                     ");break;
				case 6:printf("Compute Average and Sum.                                      ");break;
				case 7:printf("Index records on students' ID.                                ");break;
				case 8:printf("Index records on students' scores.                            ");break;
				case 9:printf("Index records on students' sum and average.                   ");break;
			}break;
		case 2:switch(x)
			{
				case 3:printf("Input a Student's ID, and show informations.                  ");break;
				case 4:printf("Input a Student's name, and show informations.                ");break;
				case 5:printf("Input a score, and show informations.                         ");break;
				case 6:printf("Print all records.                                            ");break;
			}break;
		case 3:switch(x)
			{
				case 3:printf("Theme.                                                        ");break;
				case 4:printf("About this software's Ver. and informations related to update.");break;
				case 5:printf("This is a beautiful clock.                                    ");break;
			}break;
	}
}
 /*enter function*/
void Enter(int m,int n)
{
	switch(m)
	{
		case 0:switch(n) 
			{
				case 0:head=load();puttext(1,1,80,25,save);
					if(head==0);
					else
					{
						print(head);
					}break;
				case 1:head=create();puttext(2,3,39,20,Nuleft);puttext(2,22,79,23,Nuhint);break;
				case 2:savefile(head);puttext(1,1,80,25,save);print(head);break;
				case 3:copy();puttext(1,1,80,25,save);break;
				case 4:saveend(head);exit(1);
			} break;
		case 1: switch(n)
			{
				case 0:head=insert(head);puttext(1,1,80,25,save);print(head);break;
				case 1:head=update(head);print(head);break;
				case 2:head=delete(head);print(head);break;
				case 3:calculate(head);break;
				case 4:head=indexID(head);print(head);break;
				case 5:head=indexGrades(head);print(head);break;
				case 6:head=indexSUM(head);calculate(head);break;
			}break;
		case 2:switch(n)
			{
				case 0:searchID(head);print(head);break;
				case 1:searchName(head);print(head);break;
				case 2:searchGrades(head);print(head);break;
				case 3:print(head);break;
			}break;
		case 3:switch(n)
			{
				case 0:Help();break;
				case 1:Ver();break;
				case 2:clock();puttext(1,1,80,25,clockback);break;
			}break;
	}
}