student.c

我写的学生信息管理系统,希望可以给大家带来帮助

        NoRecord();
    }
    else
    {
        while (1) 
    	{	
            system("cls");
            WinSortDate();
            GetString(key,1);
            switch(key[0])
    		{
            case '1':          //按学号升序排              
                DataInsertionSort(head,SnoAscForm);
                SortSelect();
                g_sav = 0;
            	break;
            case '2':         //按学号降序排
                DataInsertionSort(head,SnoDescForm);
                SortSelect();
                g_sav = 0;
            	break;
            case '3':        //按总分升序排
                DataInsertionSort(head,TogradeAscForm);
                SortSelect();
                g_sav = 0;
            	break;
            case '4':       //按总分降序排
                DataInsertionSort(head,TogradeDescForm);
                SortSelect();
                g_sav = 0;
            	break;
            case '0':
            	return;
            default:
                goxy(2,20);
                printf(" You must input the number between 0 - 4!!");
                goxy(2,21);
                printf("press any ch to continue");
                getch();    	
    		}
    	}
    }
}
///////////////////////////3.打印学生成绩/////////////////////////
void printreport(struct student *head,int n)
{
    if(g_count<=0)
    {
        NoRecord();	    	
    }
    else
    {
        int i,j,k=0,leaf=1,maxleaf;
        char str[1];
        struct student *node;
        struct student *tmp;
        node=head->next;
        if (n%N==0)
            maxleaf=n/N;         //最大页数
        else
            maxleaf=n/N+1;       //最大页数	    
        while(1)
    	{
            system("cls");
            winstudengrade();
            goxy(35,0);
            printf("Print Info");
        	j=7;
            for(i=1;i<=N;i++,j++)
        	{
                goxy(1,j);
                printf("%-5s%-20s%3d%8.1f%8.1f%5.1f%8.1f",node->sno,node->name,node->age,node->grade[0],node->grade[1],node->grade[2],node->grade[3]);
                printf("%10.1f%6.1f%5.1f",node->grade[4],total(node),total(node)/5.0);
                if (++k!=n)
                    node=node->next;
                else
                    break;
        	}
            goxy(2,18);
            printf("Press up  down left right !");
            goxy(66,18);
            printf("Leaf Now  :%2d",leaf);
            goxy(66,19);
            printf("Leaf Total:%2d",maxleaf);
            goxy(66,20);
            printf("Info Total:%2d",n);
            goxy(2,19);
            printf("Press [1-%d] to go to the leaf,Press ESC to continue",maxleaf);
            while(1)
        	{			
                  str[0]=getch();
                if (isdigit(str[0])&&n>N*(str[0]-49)&&(str[0]!=48))  //输入数字键选择第几页
        		{
                    node=head->next;
                    for (i=1;i<=N*(str[0]-49);i++)
            		{
                        node=node->next;
            		}
                    leaf=str[0]-48;
                    k=N*(str[0]-49);
                    break;
        		}
                if (str[0]==27)                       //ESC退出
                    return;
                if (str[0]<=0)
        		{   
                	tmp=head;
                    str[0]=getch();
                    if (str[0]==72&&leaf!=1)          //向上翻页
                	{ 
                        for(i=0;i<=(leaf-2)*N;i++)
        				{
                        	tmp=tmp->next;
        				}
                        node=tmp;
                    	k=(leaf-2)*N;
                        leaf--;
                        break;
            		}
                    if (str[0]==80&&leaf!=maxleaf)       //向下翻页
            		{
                            leaf++;
                            break;	
            		}
                    if (str[0]==75&&leaf!=1)
            		{
                        node=head->next;				    
                    	k=0;
                        leaf=1;
                        break;
            		}
                    if (str[0]==77&&leaf!=maxleaf)
            		{
                        for (i=0;i<=(maxleaf-1)*N;i++)
        				{
                        	tmp=tmp->next;
        				}
                        node=tmp;
                        k=(maxleaf-1)*N;
                    	leaf=maxleaf;
                        break;
            		}
        		}
        	}
        }
    }
}
void DeleStudent(struct student *key)
{
    char str[1];
    goxy(10,11);
    printf("Search is succeed,do you want to delete this info or revise it?");
    goxy(10,13);
    printf("Please input a letter Y(y) or N(n)  or  U(u):");
    goxy(2,20);
    printf("                                                                   ");
    while(1)
    {
        goxy(56,13);
        GetString(str,1);
        if (str[0]=='Y'||str[0]=='y')
        {			
            deleteinfo(key);
            goxy(2,20);
            printf("Delete info is succeed,press any char to continue");
            getch();
            break;
        }		
        else if (str[0]=='N'||str[0]=='n')
            return;
        else if (str[0]=='U'||str[0]=='u')
        {			
            strcpy(num[g_z],key->sno);
            deleteinfo(key);    		
            AddStudentInfo();
            goxy(2,20);
            printf("Revise  Info is Succeed,please press any char to continue");
            getch();    		
            return;     	
    	}
        else
    	{
            goxy(2,20);
            printf(" You input error,please input any Y or N,press any ch to continue");
            getch();
            goxy(2,20);
            printf("                                                                            ");
            goxy(52,14);
            printf(" ");
    	}
    }
    return;   
}       
///////////////////////////6.查询学生信息//////////////////////////
void searchstudents()
{
    struct student *q[100]={0};
    char str[1] ,sno[4]={'\0'};
    int i=0;
    if(g_count<=0)
    {
        NoRecord();
    }
    else
    {
        while (1)
    	{	
            system("cls");
            winsearchstudents();
            goxy(55,12);
            GetString(str,1);
            if (str[0]=='1')                      //按学号查询
    		{
                struct student *key;
                key=head->next;
                if(key=searchbysno(head))					
                    DeleStudent(key);
        		else
        		{
                	goxy(2,21);
                    printf("Search is failed,Press any ch to continue");
                	getch();
        		}
                continue;
    		}
            else if (str[0]=='2')                 //按姓名查询
    		{
                if (q[0]=searchbyname(head)) 
        		{
                	goxy(2,20);
                    printf("Search is succeed,do you want to delete the info ?(Y/N):");
                	while (1) 
        			{
        				
                    	goxy(60,20);
                        GetString(str,1);
        				{
                            goxy(2,20);
                            printf("                                                              ");
                            goxy(2,21);
                            printf("                                                                ");
                            goxy(2,20);    
                            printf("Please input the student sno: ");
                            GetString(sno,3); 
                        	while(flag[i])
        					{
                                if(strcmp(flag[i]->sno,sno)==0)
            					{
                        			system("cls");
                                	DeleStudent(flag[i]);
                					break;
            					}
            					i++;
        					}
                        	if(flag[i]==NULL)
        					{
                    			goxy(2,21);
                                puts("The sno isn't in here,please input again!");
                				getch();
        					}
                            break;              			
        				}
                        if (str[0]=='N'||str[0]=='n')
                			break;
            			else
        				{
                            goxy(2,21);
                            printf("You input error,please input Y(y) or N(n),press any ch to continue");
                            getch();
                            goxy(2,21);
                            printf("                                                                      ");
                        }       			
        			}
        		}
                else
        		{
                	goxy(2,21);
                    printf("There is not a note by the student,Press any ch to continue");
                    getch();
                }   		
                continue;   	
    		}
            else if (str[0]=='0')           
                return;       	
        	else
                goxy(2,20);
            printf("You input error, please input a number between 0 to 2");
            goxy(2,21);
            printf("Press any ch to continue");
            getch();
    	}
    }
}

///////////////////////////7.统计成绩/////////////////////////
void statgrade()
{   
    if(g_count<=0)
    {
        NoRecord();
    }
    else 
    {   	
        system("cls");
        goxy(1,2);
        printf("----------------------------StatAllThree----------------------------");
        goxy(8,3);
        printf("\tTop3 by Chinese Garde");
        goxy(9,5);
        printf("Id  \tName");
        goxy(34,5);
        printf("\tAge   \t  Grade"); 
        StatSubThree(ChineseDescForm,ContrastChigrade,0); 
        printf("\t\tTop3 by English Garde\n");
        StatSubThree(EnglishDescForm,ContrastEnggrade,1);
        printf("\t\tTop3 by Math Garde\n");
        StatSubThree(MathDescForm,ContrastMatgrade,2);  
        printf("\t\tTop3 by Physics Garde\n");
        StatSubThree(PhysicsDescForm,ContrastPhygrade,3); 
        printf("\t\tTop3 by Chemistry Garde\n");
        StatSubThree(ChemistryDescForm,ContrastChegrade,4);
        StatTotThree(TogradeDescForm,ContrastTotgrade);
        Average(head,g_count);
        printf("Please enter any key to MenuList");
        getch();
        return; 	
    }
}
////////////////////////////0.退出//////////////////////////
void out()                        
{   
    char key[1];
    int m;
    while(1)
    {   
        system("cls");
        goxy(22,9);
        printf("Do you want to out of the system");
        goxy(22,11);
        printf("Please Enter Y(Yes) , N(No)or C(cancel):");
        goxy(62,11);
        GetString(key,1);   	
        if (key[0]=='Y'||key[0]=='y')
    	{	
            if(g_sav == 0)
    		{
                m=Select("The system have some record no save,do you want to save Y(y) or N(n):");
            	if(m==1)
                	savefile();
                else if(m==-1)
                    exit(0);								
    		}
        	else
    		{
            	exit(0);
    		}
        }  	
        else if(key[0]=='c'||key[0]=='C')
        {		
            break;
    	}
    	
        else if(key[0]=='N'||key[0]=='n')
    	{
            getch();
            return;
    	}
        else
    	{
            goxy(2,20);
            printf(" is a error char,please input a char ( Y , N  or C)");
            goxy(2,21);
            printf("   ");
            system("pause");    		
    	}
    }
}
/////////////////////计算总分/////////////////////
float total(struct student *nod) 
{
    float sum=0;
    sum=nod->grade[0]+nod->grade[1]+nod->grade[2]+nod->grade[3]+nod->grade[4];
    return sum;
}
///////////////////////排序////////////////////////
void DataInsertionSort(struct student *head,int (*p)())  //插入排序法
{
    struct student *b,*c,*w;
    w=head->next;
    while (w->next!=NULL)
    {
        w=w->next;
        b=head->next;
        while (b!=w)
        {
            if ((*p)(b,w))
    		{
                c=w;
                w=w->pre;
                c->pre->next=c->next;
                if (c->next!=NULL)
                    c->next->pre=c->pre;
                b->pre->next=c;
                c->pre=b->pre;
                c->next=b;          	
                b->pre=c;
                break;
    		}
            else
                b=b->next;
        }       
    }
    tail=w;
}
//////////////////////学号总分升降序///////////////////
int SnoAscForm(struct student *p,struct student *q)   //学号升序
{
    return strcmp(p->sno,q->sno)>0;
}
int SnoDescForm(struct student *p,struct student *q)  //学号降序
{
    return strcmp(p->sno,q->sno)<0;
}
int TogradeAscForm(struct student *p,struct student *q)  //总分升序
{
    float total1=0,total2=0;
    total1+=p->grade[0]+p->grade[1]+p->grade[2]+p->grade[3]+p->grade[4];
    total2+=q->grade[0]+q->grade[1]+q->grade[2]+q->grade[3]+q->grade[4]; 
    return total1>total2;
}
int TogradeDescForm(struct student *p,struct student *q) //总分降序
{
    float sumP=0,sumQ=0;
    sumP+=p->grade[0]+p->grade[1]+p->grade[2]+p->grade[3]+p->grade[4];
    sumQ+=q->grade[0]+q->grade[1]+q->grade[2]+q->grade[3]+q->grade[4]; 
    return sumP<sumQ;
}

///////////////////////单科成绩降序////////////////////
int ChineseDescForm(struct student *p,struct student *q)//语文降序
{
    return p->grade[0] < q->grade[0];
}
int EnglishDescForm(struct student *p,struct student *q)//英语降序
{
    return p->grade[1] < q->grade[1];
}
int MathDescForm(struct student *p,struct student *q)   //数学降序
{
    return p->grade[2] < q->grade[2];
}
int PhysicsDescForm(struct student *p,struct student *q) //物理降序
{
    return p->grade[3] < q->grade[3];
}
int ChemistryDescForm(struct student *p,struct student *q)//化学降序
{
    return p->grade[4] < q->grade[4];