student.c

我写的学生信息管理系统,希望可以给大家带来帮助

            }       		       
            temp=(struct student*)malloc(sizeof(struct student));
        	k++;
            g_count++;
    	}
        free(temp);	
        fread(num,400*sizeof(char),1,fp);	
        fread(&g_z,sizeof(int),1,fp);			
    }
    fclose(fp);   
    return 1;
}
//////////////////////1.添加学生信息////////////////////// 
void AddStudentInfo()
{   
    system("cls");
    Addstu();
    WinAddStudentInfo();    	
    BuildStuId();                 //自动生成和回收学号	
    InputStuName();                        //输入姓名
    temp->age=InputStuAge();                 //输入年龄
    goxy(35,8);
    temp->grade[0]=InputStugrade();   //输入语文成绩
    goxy(35,9);
    temp->grade[1]=InputStugrade();   //输入英语成绩
    goxy(35,10);
    temp->grade[2]=InputStugrade();      //输入数学成绩
    goxy(35,11);
    temp->grade[3]=InputStugrade();   //输入物理成绩
    goxy(35,12);
    temp->grade[4]=InputStugrade(); //输入化学成绩	
    g_count++;    
} 
void Addstu()
{
    if (head==NULL)
    {   
        head=(struct student*)malloc(LEN); 
        head->pre=NULL;
        tail=head;
    } 
    temp=(struct student*)malloc(LEN);
    temp->next=NULL;
    temp->pre=tail;
    tail->next=temp;
    tail=temp;		 
}
struct student *addstudentinfo()
{
    char str[1]; 
    while (g_count<100)
    {
        AddStudentInfo();
        g_sav = 0;
        goxy(2,19);
        printf("Enter successful, would you like to enter again?");
        goxy(2,20);
        printf("Please input Y(yes) or N(no):");
        while(1)
        {
            goxy(31,20);
            GetString(str,1);
            if (str[0]=='Y'||str[0]=='y')
                break;
            else if (str[0]=='N'||str[0]=='n')      	
                return head;
            else
    		{
                goxy(2,21);
                putchar(str[0]);
                printf(" is a error option,please input any ch to continue");
                getch();
                goxy(31,20);
                printf(" ");
                goxy(2,21);
                printf("                                                       ");
                goxy(31,20);
    		}
        }
    }
    goxy(2,21);
    printf("The data is fulled,press any ch to continue");
    getch();
    return head;
}
///////////////////////自动生成学号/////////////////
void BuildStuId()
{       
    if (g_z<=0)
    {
        printf("%03d",g_count+1);
        sprintf(temp->sno,"%03d",g_count+1);
    }
    if (g_z>0)
    {		
        temp->sno[0]=num[g_z-1][0];
        temp->sno[1]=num[g_z-1][1];	
        temp->sno[2]=num[g_z-1][2];	
        temp->sno[3]=num[g_z-1][3];	
        printf("%s",temp->sno);
        g_z--;
        if (g_count==0)
    	{
            head=(struct student*)malloc(LEN); 
            tail=head;          
    	}
    }    
}

//////////////////////输入学生姓名////////////////////////
void InputStuName()
{
    int i,mark=0;
    char str[21];
    while(1)
    {       	
        goxy(35,6);
        GetString(str,20);
        ReMoveSpece(str,temp->name);    	
        if (temp->name[0]==0)               //判断是否空字符串
        {
           Blank();
            continue;
        }
        for (i=0;i<(int)strlen(temp->name);i++)     //判断是否字母和空格
        {
            if (!(isalpha(temp->name[i])||temp->name[i]==' '))
    		{
                mark=1;
                goxy(2,19);
                printf("The name only can include letter,please enter a new name again:");
                goxy(2,20);
                printf("Please input any ch to continue");
            	getch();
                goxy(2,19);  
                printf("                                                                         ");
                goxy(2,20);
                printf("                                     ");
                
                goxy(35,6);
                printf("                        ");     		
            	break;
    		}
        }
        if (mark==1)
        {
            mark=0;
            continue;
        }
        goxy(35,6);
        printf("                     ");
        goxy(35,6);
        printf("%s",temp->name);
        break;
    }
}
//////////////////////输入年龄/////////////////////
int InputStuAge()
{
    int i,mark=0,stuage;
    char str[3],str1[3];
    while(1)
    {   
        goxy(35,7);
        GetString(str1,2);
        ReMoveSpece(str1,str);
        if (str[0]==0)             //判断是否空字符串
        {
          Blank();
            continue;
        }
        for (i=0;i<(int)strlen(str);i++)     //判断是否数字
        {
            if (!isdigit(str[i]))
    		{
                mark=1;
                goxy(3,19);
                printf("The age can't include letter,please input a age[10-20]:");
                goxy(3,20);
                printf("Please input any ch to continue");
                getch();
                goxy(35,7);
                printf("                     ");
                goxy(3,19);
                printf("                                                           ");
                goxy(3,20);
                printf("                                ");
                break;
    		}
        }
        if (mark==1)
        {
            mark=0;
            continue;
        }
        stuage=atoi(str);
        if (stuage<7||stuage>50) 
        {
            goxy(3,19);
            if (stuage<7)
                printf("Sorry,you input too small,the age between 7 to 50:");
            else if(stuage>50)
                printf("Sorry,you input too big,the age between 7 to 50:");
            goxy(3,20);
            printf("Please input anych to continue");
            getch();
            goxy(35,7);
            printf("    ");
            goxy(3,19);
            printf("                                                                   ");
            goxy(3,20);
            printf("                                                                   ");
            continue;
        }
        goxy(35,7);
        printf("                      ");
        goxy(35,7);
        printf("%d",stuage);
        return stuage;
    }
}

///////////////////////输入成绩//////////////////////
float InputStugrade()
{
    struct position pos;
    char subject[5],str[5];
    int i=0,sign=0,stringlen,point=0;float result;
    int x,y;
    pos=GetCurentPos();            //获取当前光标
    x=pos.curX;            
    y=pos.curY;
    while(1)
    {   
        point=0;
        goxy(x,y);
        GetString(str,4);
        ReMoveSpece(str,subject);       
        stringlen=strlen(subject);
        if (subject[0]==0)             //判断是否空字符串
        {
           Blank();
            continue;
        }   	
        for (i=0;i<stringlen;i++)     
        {
            if (subject[i]=='.')
    		{
                point++;
            }       	
        }	   	 
        if (!isdigit(subject[0])&&!isdigit(subject[1])&&!isdigit(subject[2])&&!isdigit(subject[3])
            &&(subject[0]!='.') &&(subject[1]!='.') &&(subject[2]!='.') &&(subject[3]!='.'))
        {  
            goxy(2,20);
            printf("The Grade is only inputed number,please input a result[0-100]:");
            goxy(2,21);
            printf("Please input any ch to continue");
            getch();
            goxy(x,y);
            printf("                     ");
            goxy(2,20);
            printf("                                                               ");
            goxy(2,21);
            printf("                                  ");
    		
            continue;
        }        		
        if(point>1)
        {goxy(2,20);    
        printf("You Only can input one point!!!");
        goxy(2,21);
        printf("Please input anych to continue");
        getch();
        goxy(x,y);
        printf("    ");
        goxy(2,20);
        printf("                                                                     ");
        goxy(2,21);
        printf("                                   ");
        continue;    		
    	}
        result=(float)(atof(subject));
    	
        if (result<0||result>100||((int)(result*100)%100!=50 && (int)(result*100)%100!=0)) 
        {
            goxy(2,20);
            if (result<0)
                printf("The result is too small,please input a age between 0 to 100:");
            else if(result>100)
                printf("The result is too big,please input a age between 0 to 100");
            else if(((int)(result*100)%100!=50 && (int)(result*100)%100!=0))
                printf("Please input .0||.5");
            goxy(2,21);
            printf("Please input anych to continue");
            getch();
            goxy(x,y);
            printf("    ");
            goxy(2,20);
            printf("                                                                     ");
            goxy(2,21);
            printf("                                   ");
            continue;
        }
        goxy(x,y);
        printf("             ");
        goxy(x,y);
        printf("%.1f",result);
        break;
    }
    return result;
}
////////////////////////输入限定个数的字符////////////////////
int GetString(char str[],int lenmax)
{ 
    int i=0;
    while (1) 
    {
        str[i]=getch();
        if (str[i]=='\r')              //判断回车
    	{
            str[i]='\0';
            return i;
    	}
        if (str[i]=='\b')              //退格
    	{
            if (i==0)
    		{
    			
                continue;
    		}
        	else
        	{	
                printf("\b \b");
        		i--;
                continue;
    		}
    	}
        if (i==lenmax)                 //字数满了
    	{
    		
            continue;
    	}
    	
        if (str[i]==9||str[i]<=0)                 //如果是非打印字符和Tab
    	{
            str[i]=getch();
            continue;
    	}
        else                           //如果为打印字符
    	{
            putchar(str[i]);
        	i++;
            continue;
    	}
    } 
}   
int RestrictCode(char buffer[], int maxLen) 
{ 
    int pos=0; 
    int readch; 
    while((readch=getch())!='\r' ) 
    { 
        if (readch=='\b') 
    	{ 
            if(pos>0)
        	{  
            	pos--; 
                printf("\b \b");
        	} 
            continue;
    	} 
        if(readch==224||readch==0)
    	{
            _getch();
            continue;
    	} 
        if(pos <maxLen)
    	{
            putch(' ');
            putch('\b');
            putch(42);
    	} 
        else continue; 
        buffer[pos++]=readch; 
    }
    
    printf("\r\n"); 
    if(pos <maxLen)buffer[pos]=0; 
    return pos; 
} 
void LandToSystem()
{
    char str[20],str1[20]; 
    char d[21]={"0123456789"};
    char e[7]={"012345"};
    char c[15];
    int j,n=0;
    InterPhase(); 
    WinMessage("LandSystem");
    goxy(26,5);
    printf("UserName is :");
    goxy(26,8);
    printf("UserCode is :");
    for(j=2;j>=0;j--)
    {
        goxy(40,5);
        printf("                             ");    	
        goxy(40,8);
        printf("                             ");
        goxy(40,5);
        GetString(str,15);
        goxy(22,18);
        printf("                                         ");
        ReMoveSpece(str,str1);  	
        if(!(strlen(str1)==10))
        {
            goxy(22,18);printf("you must input 10 dige char!! ");
        	j++;
            continue;
        }
        goxy(22,18);
        printf("Please input right code!!");
        goxy(40,8);
        RestrictCode(c,10);
        printf("                                                      ");
        printf("\n");
        if ((strcmp(str1,d)==0)&&(strcmp(c,e))==0)
        {
            goxy(22,18);  printf("you are right!"); system("pause");
            break;break;
        }
        else
        {
            if (j<=2&&j>0) 
    		{
                goxy(22,18);
                printf("                                                    ");
                goxy(22,18);
                printf("you input wrong,you only have %d chance",j);goxy(40,8);} 
            else
    		{
                exit(0);
    		}
        }   	
    }
}
void ReMoveSpece(char str[],char str1[])
{           
    char *p,*p1;  
    p=str;p1=str1; 
    while(*p==' ') p++; 
    while(*p!='\0') *p1++=*p++; 
    p1--; 
    while(*p1==' ') p1--; 
    p1++; 
    *p1='\0';
}