部落格搬家了，最近同時更新，沒準什麼時候就完全搬走了-_-
http://blog.just666.cn 這個是新部落格地址，希望大家多多關照

/*********************************************************
*程式描述：學生成績管理系統
*執行環境：Windows 7 SP1 X64
*開發環境：CodeBlocks with Win7
*作者：耗子、
*時間：2015.03
**********************************************************/

#include <stdio.h>
 

#include <stdlib.h>
#include <string.h>
#include <ctype.h>

const int TRUE = 1;
const int FALSE = 0;
const char BACK[] = "back";

typedef struct Student  //連結串列元素
{
    char name[100], number[100];
    double chinese, math, english;
    struct Student* next;
}LNode, *Student;

//↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓宣告函式↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓//
 

Student initLinkList();//初始化
void insLinkList(Student* pHead, char name[],//插入元素
                  char number[], double chinese,
                  double math, double english);
int  delLinkList(Student* pHead, char number[]);//刪除元素
int  listLength(Student* pHead);//獲取連結串列長度
int  findLinkList(Student* pHead, char
 
 number[]);//查詢元素，返回位置
int  modLinkList(Student* pHead, char number[],//修改元素
                 double chinese, double math,
                 double english);
void   outPutLinkList(Student* pHead);//輸出所有資訊
double scoreLegal(char score[]);//判斷分數合法
int    nameLegal(char name[]);//判斷姓名合法
int    numberLegal(char number[]);//判斷學號合法
int    emptyLinkList(Student* pHead);//判斷連結串列是否為空

void swapNode(Student p, Student q);//負責交換
void putMain();//輸出主UI
void putSort();//輸出排序UI
int  isBack(char str[]);//判斷返回
void error(char []);//錯誤警告
void welcome();//歡迎
void bay();//再見
//↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑宣告函式↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑//

//↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓主函式↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓//
int main()
{
    system("color 0A");
    system("mode con cols=80 lines=25");
    Student pHead;
    Student q, p;
    char name[100], number[100], chinese[100], math[100],
    english[100];
    int op, n;                  //op是選擇的選項
    double cn, ma, eng;
    int i, j, sum;
    pHead = initLinkList();
    welcome();
    while (1)
    {
        begin:
        q = pHead;
        putMain();
        op = (getch() - '0' );
        if (op == -1)
            continue;
        switch (op)
        {
            case 0://退出
            {
                bay();
                return 0;
            }
            case 1://新增資訊
            {
                for (;;)
                {
                    printf ("\n\t\t\t叫什麼？");
                    gets(name);
                    if (isBack(name))
                        goto begin;
                    if (nameLegal(name) == 0)
                        continue;
                    else
                        break;
                }
                number:
                for (;;)
                {
                    printf ("\t\t\t學號呢？");
                    gets(number);
                    if (isBack(number))
                        goto begin;
                    if (numberLegal(number) == 0)
                        continue;
                    else
                        break;
                }
                while (q != NULL)
                {
                    if (strcmp(q->number, number) == 0)
                    {
                        error("學號重複了噻~");
                        goto number;
                    }
                    else
                        q = q->next;
                }
                for (;;)
                {
                    printf ("\t\t\t語文多少分？\n\t\t\t");
                    gets(chinese);
                    if (isBack(chinese))
                        goto begin;
                    cn = scoreLegal(chinese);
                    if (cn == -1)
                        continue;
                    else
                        break;
                }
                for (;;)
                {
                    printf ("\t\t\t數學呢？\n\t\t\t");
                    gets(math);
                    if (isBack(math))
                        goto begin;
                    ma = scoreLegal(math);
                    if (ma == -1)
                        continue;
                    else
                        break;
                }
                for (;;)
                {
                    printf ("\t\t\tEnglish：\n\t\t\t");
                    gets(english);
                    if (isBack(english))
                        goto begin;
                    eng = scoreLegal(english);
                    if (eng == -1)
                        continue;
                    else
                        break;
                }
                insLinkList(pHead, name, number,
                            cn, ma, eng);
                printf ("\n\t\t\t學生資訊新增完畢\a");
                getch();
                break;
            }
            case 2://刪除資訊
            {
                for(;;)
                {
                    if (emptyLinkList(pHead))
                        break;
                    printf ("\t\t\t要刪除的學生的學號：");
                    gets(number);
                    if (isBack(number))
                        goto begin;
                    if (numberLegal(number) == 0)
                        continue;
                    if (delLinkList(pHead, number) == 1)
                    {
                        printf ("\t\t\t刪除成功！");
                        getch();
                        break;
                    }
                    else
                        error ("沒有找到該學生！");
                    continue;
                }
                break;
            }
            case 3://查詢資訊
            {
                if (emptyLinkList(pHead))
                    break;
                printf ("\n\t\t\t要查詢誰的資訊？");
                gets(number);
                if (isBack(number))
                    goto begin;
                if (numberLegal(number) == 0)
                    continue;
                findLinkList(pHead, number);
                break;
            }
            case 4://修改資訊
            {
                if (emptyLinkList(pHead))
                    break;
                for (;;)
                {
                    printf ("\n\t\t\t要修改哪個的資訊？");
                    gets(number);
                    if (isBack(number))
                        goto begin;
                    if (numberLegal(number) == 0)
                        continue;
                    else
                        break;
                }
                for (;;)
                {
                    if (strcmp(q->number, number) == 0)
                        break;
                    else
                        q = q->next;
                    if (q == NULL)
                    {
                        error("沒有找到該學生！");
                        getch();
                        goto begin;
                    }
                }
                for (;;)
                {
                    printf ("\t\t\t語文多少分？\n\t\t\t");
                    gets(chinese);
                    if (isBack(chinese))
                        goto begin;
                    cn = scoreLegal(chinese);
                    if (cn == -1)
                        continue;
                    else
                        break;
                }
                for (;;)
                {
                    printf ("\t\t\t數學呢？\n\t\t\t");
                    gets(math);
                    if (isBack(math))
                        goto begin;
                    ma = scoreLegal(math);
                    if (ma == -1)
                        continue;
                    else
                        break;
                }
                for (;;)
                {
                    printf ("\t\t\tEnglish：\n\t\t\t");
                    gets(english);
                    if (isBack(english))
                        goto begin;
                    eng = scoreLegal(english);
                    if (eng == -1)
                        continue;
                    else
                        break;
                }
                modLinkList(pHead, number, cn, ma, eng);
                break;
            }
            case 5://輸出資訊
            {
                    if (emptyLinkList(pHead))
                        break;
                    q = pHead;
                    p = pHead;
                    sum = listLength(pHead);
                    putSort();
                    op = (getch() - '0');
                    switch (op)
                    {
                        case 0://退出
                            goto begin;
                        case 1://學號
                            {
                                for (i = 0; i < sum - 1; i++)
                                {
                                    for (j = 0; j < sum - i - 1; j++)
                                    {
                                        if (strcmp(p->number, q->number) > 0)
                                            swapNode(p, q);
                                        q = q->next;
                                    }
                                    p = p->next;
                                    q = p->next;
                                }
                                break;
                            }
                        case 2://語文
                            {
                                for (i = 0; i < sum - 1; i++)
                                {
                                    for (j = 0; j < sum - i - 1; j++)
                                    {
                                        if (q->chinese < p->chinese)
                                            swapNode(p, q);
                                        q = q->next;
                                    }
                                    p = p->next;
                                    q = p->next;
                                }
                                break;
                            }
                        case 3://數學
                            {
                                for (i = 0; i < sum - 1; i++)
                                {
                                    for (j = 0; j < sum - i - 1; j++)
                                    {
                                        if (q->math < p->math)
                                            swapNode(p, q);
                                        q = q->next;
                                    }
                                    p = p->next;
                                    q = p->next;
                                }
                                break;
                            }
                        case 4://英語
                            {
                                for (i = 0; i < sum - 1; i++)
                                {
                                    for (j = 0; j < sum - i - 1; j++)
                                    {
                                        if (q->english < p->english)
                                            swapNode(p, q);
                                        q = q->next;
                                    }
                                    p = p->next;
                                    q = p->next;
                                }
                                break;
                            }
                        case 5://總分
                            {
                                for (i = 0; i < sum - 1; i++)
                                {
                                    for (j = 0; j < sum - i - 1; j++)
                                    {
                                        if ((q->chinese + q->math + q->english)
                                            < (p->chinese + p->math + p->english))
                                            swapNode(p, q);
                                        q = q->next;
                                    }
                                    p = p->next;
                                    q = p->next;
                                }
                                break;
                            }
                        default:
                            break;
                    }
                    if (op >= 1 && op <= 5)
                        outPutLinkList(pHead);
                    break;
            default:
                break;
            }
        }
    }
    return 0;
}
//↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑主函式↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑//

//↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓連結串列操作↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓//
Student initLinkList()                          //初始化
{
    Student pHead;
    pHead = (Student)malloc(sizeof(LNode));
    pHead->next = NULL;
    return pHead;
}

void insLinkList(Student* pHead, char name[],   //插入元素
                 char number[], double chinese,
                 double math, double english)
{
    Student p = pHead;
    Student pNew = (Student)malloc(sizeof(LNode));
    while (p->next != NULL)
        p = p->next;
    strcpy(pNew->name, name);
    strcpy(pNew->number, number);
    pNew->chinese = chinese;
    pNew->math = math;
    pNew->english = english;
    pNew->next = NULL;
    p->next = pNew;
    return ;
}

int delLinkList(Student* pHead, char number[])  //刪除元素
{
    Student p = pHead, q;
    while (p->next != NULL)
    {
        if (strcmp(p->next->number, number) == 0)
        {
            q = p->next->next;
            free(p->next);
            p->next = q;
            free(q);
            return TRUE;
        }
        p = p->next;
    }
    return FALSE;
}

int listLength(Student* pHead)                  //獲得連結串列長度
{
    int n = 0;
    Student p = pHead;
    while (p != NULL)
    {
        p = p->next;
        n++;
    }
    return n;
}

int findLinkList(Student* pHead, char number[]) //查詢元素
{
    Student p = pHead;
    p = p->next;
    double sum;
    while (p != NULL)
    {
        if (strcmp(p->number, number) == 0)
        {
            system ("CLS");
            sum = p->chinese + p->math + p->english;
            printf ("\n\n\t\t\t***********************\n\t\t\t*  該學生成 績如下表  *\n");
            printf ("\t\t\t***********************\n");
            printf ("\t\t\t*     %s     *\n", p->number);
            printf ("\t\t\t***********************\n");
            printf ("\t\t\t*     姓名：%-8s  *\n", p->name);
            printf ("\t\t\t*     語文：%-6.2f    *\n", p->chinese);
            printf ("\t\t\t*     數學：%-6.2f    *\n", p->math);
            printf ("\t\t\t*     英語：%-6.2f    *\n", p->english);
            printf ("\t\t\t*     平均：%-7.2f   *\n", sum / 3);
            printf ("\t\t\t*     總分：%-7.2f   *\n", sum);
            printf ("\t\t\t***********************\n");
            getch();
            return TRUE;
        }
        p = p->next;
    }
    error("沒有該學生的資訊~");
    return FALSE;
}

int modLinkList(Student* pHead, char number[],  //修改元素
                double chinese, double math,
                double english)
{
    Student p = pHead;
    p = p->next;
    while (p != NULL)
    {
        if (strcmp(p->number, number) == 0)
        {
            p->chinese = chinese;
            p->math    = math;
            p->english = english;
            return TRUE;
        }
        p = p->next;
    }
    return FALSE;
}

void outPutLinkList(Student* pHead)             //輸出所有元素
{
    if (emptyLinkList(pHead))
        return ;
    system ("CLS");
    Student p = pHead;
    p = p->next;
    printf ("\n\n\t\t\t      所有學生成績如下\n");
    printf ("\n     *******************************************************************\n");
    printf ("     *     學    號    *   姓 名  *   語 文 *  數 學 *  英 語 * 總 分 *");
    printf ("\n     *******************************************************************\n");
    while (p != NULL)
    {
        printf ("     *   %s   *", p->number);
        printf (" %-8s *", p->name);
        printf (" % 6.2f  * %6.2f * %6.2f *", p->chinese, p->math, p->english);
        printf (" %6.2f *\n", p->chinese + p->math + p->english);
        p = p->next;
    }
    printf ("     *******************************************************************\n");
    getch();
    return ;
}

int emptyLinkList(Student* pHead)               //連結串列為否為空
{
    Student p = pHead;
    if (p->next == NULL)
    {
        error("沒有任何學生資訊！");
        return TRUE;
    }
    return FALSE;
}

void swapNode(Student p, Student q)             //交換節點內容
{
    Student temp = initLinkList();

    strcpy(temp->name, p->name);
    strcpy(p->name, q->name);
    strcpy(q->name, temp->name);

    strcpy(temp->number, p->number);
    strcpy(p->number, q->number);
    strcpy(q->number, temp->number);

    temp->chinese = p->chinese;
    p->chinese = q->chinese;
    q->chinese = temp->chinese;

    temp->math = p->math;
    p->math = q->math;
    q->math = temp->math;

    temp->english = p->english;
    p->english = q->english;
    q->english = temp->english;

    free(temp);
}

//↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑連結串列操作↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑//

//↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓函式定義↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓//

int isBack(char ch[])                           //判斷返回
{
    if(strcmp(ch, BACK) == 0)
        return TRUE;
    return FALSE;
}

int numberLegal(char number[])                  //判斷學號
{
    int i;
    if (strlen(number) != 11)//位數判斷
    {
        error("學號應為十一位純數字");
        return FALSE;
    }
    for (i = 0; i < 11; i++)
        if ( ! isdigit(number[i]))//是否是數字
        {
            error("學號應為十一位純數字");
            return FALSE;
        }
    if (number[0] == 0)//學號首位
    {
        error("學號第一位不能為0");
        return FALSE;
    }
    return TRUE;
}

int nameLegal(char name[])                      //判斷姓名
{
    int i, n = strlen(name);
    if (n <= 3)
    {
        error("科普：所謂姓名，一姓一名，最少得倆字兒");
        return FALSE;
    }
    for (i = 0; i < n; i++)
        if (name[i] >= 0)
        {
            error("既然是中國人，名字當然也是中國字了啊");
            return FALSE;
        }
    if (strlen(name) > 8)
    {
        error ("名字太長的話，請用縮寫");
        return FALSE;
    }
    return TRUE;
}

double scoreLegal(char score[])                 //判斷分數
{
    int n = strlen(score);
    int i, d = 0, g = 0;
    double q = 1, h = 0.1;
    double sum = 0;
    for (i = 0; i < n; i++)
        if (score[i] != '.' && (isdigit(score[i]) == 0))
        {
            error("分數由數字和小數點組成。。。");
            return -1;
        }
    for (i = 0; i < n; i++)
        if (score[i] == '.')
        {
            d = i;
            g++;
            if (g == 2)
            {
                error("小數點好多啊");
                return -1;
            }
        }
    if (score[0] == '.' || score[n - 1] == '.')
    {
        error("小數點不能出現在這麼詭異的位置");
        return -1;
    }
    if (g == 1)
        i = d - 1;
    else
        i = n - 1;
    for ( ; i != -1; i--)
    {
        sum = sum + (score[i] - '0') * q;
        q *= 10;
    }
    if (g == 1)
    {
        for (i = d + 1; i < n; i++)
        {
            sum = sum + (score[i] - '0') * h;
            h *= 0.1;
        }
    }
    if (sum > 100.000000)
    {
        error("分數略大啊~");
        return -1;
    }
    return sum;
}

void error(char ch[])                           //提示錯誤
{
    system ("color 0C");
    printf ("\n\n\t\t\t");
    puts(ch);
    printf ("\n");
    printf ("\a");
    getch();
    system ("color 0A");
}

void welcome()                                  //歡迎
{
    system("title 學生成績管理系統V1.0  By-耗子、");
    printf ("\n\n\n\n\t\t\t\t");
    printf ("\n\t\t********************************************");
    printf ("\n\t\t*           學生成績管理系統V1.0           *");
    printf ("\n\t\t*                                          *");
    printf ("\n\t\t*                 歡迎使用                 *");
    printf ("\n\t\t*                                          *");
    printf ("\n\t\t*                  耗子、                  *");
    printf ("\n\t\t********************************************");
    getch();
}

void putMain()                                  //主UI
{
    system ("CLS");
    system("title 學生成績管理系統V1.0  By-耗子、");
    printf ("\n\n");
    printf ("\t\t\t  學生成績管理系統V1.0\n");
    printf ("\t\t\t************************\n");
    printf ("\t\t\t*     1、新增資訊      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     2、刪除資訊      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     3、查詢資訊      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     4、修改資訊      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     5、顯示資訊      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     0、退出系統      *\n");
    printf ("\t\t\t************************\n");
    printf ("\t\t\t請選擇：（0~5）");
}

void putSort()                                  //排序UI
{
    system("title 請選擇排序方式  By-耗子、");
    system("CLS");
    printf ("\n\n");
    printf ("\t\t\t      請選擇排序方式    \n");
    printf ("\t\t\t************************\n");
    printf ("\t\t\t*     1、學號排序      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     2、語文成績      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     3、數學成績      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     4、英語成績      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     5、總分排序      *\n");
    printf ("\t\t\t*                      *\n");
    printf ("\t\t\t*     0、系統選單      *\n");
    printf ("\t\t\t************************\n");
    printf ("\t\t\t請選擇：（0~5）");
}

void bay()                                      //退出
{
    system("title 謝謝使用  By-耗子、");
    system ("CLS");
    printf ("\n\n\n\n\t\t\t\t");
    printf ("\n\t\t********************************************");
    printf ("\n\t\t*                                          *");
    printf ("\n\t\t*                                          *");
    printf ("\n\t\t*                 謝謝使用                 *");
    printf ("\n\t\t*                                          *");
    printf ("\n\t\t*                                          *");
    printf ("\n\t\t********************************************");
    printf ("\n\n\n\t\n\t\t                                    -By.耗子\n");
    getch();
}
//↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑函式定義↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑//