298 lines
6.3 KiB
Markdown
298 lines
6.3 KiB
Markdown
### C语言-1
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```c
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/*------------------------------------------------------------------------------
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（1）【程序设计】下列给定程序中，fun函数的功能是：分别统计字符串中大写字母和小写字母的个数。
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例如，给字符串s输入：AAaaBBbb123CCcccd，则应输出：upper＝6，lower＝8。
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------------------------------------------------------------------------------*/
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#include <stdio.h>
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void fun ( char *s, int *a, int *b)
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{
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/**********Program**********/
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while(*s != '\0'){
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if(*s >= 'A' && *s <= 'Z'){
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(*a)++;
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}
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if(*s >= 'a' && *s <= 'z'){
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(*b)++;
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}
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s++;
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}
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/********** End **********/
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}
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main( )
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{
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char s[100];
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int upper=0, lower=0;
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printf( "\nPlease a string : " );
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gets(s);
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fun(s,&upper,&lower);
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printf("\n upper=%d lower=%d\n",upper,lower );
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}
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```
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### C语言-2
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```c
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/*------------------------------------------------------------------------
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题目：函数fun的功能：将字符串str中第k个字符开始的n个字符逆序重排，
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例如：输入1,5 输出54321abcde
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输入3,6 输出12cba543de
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注意：部分源程序给出如下。请勿改动主函数main或其它函数中给出的内容，仅在
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Program-End之间填入若干语句。不要删除标志否则不得分。
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----------------------------------------------------------------------*/
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#include <stdio.h>
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#include <string.h>
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void fun(char *str, int k, int n )
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{
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int i,j; char t;
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for(i=k-1,j=k-1+n-1;i<j;i++,j--)
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{
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/**********Program**********/
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t = str[i];
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str[i] = str[j];
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str[j] = t;
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/********** End **********/
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}
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}
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int main( )
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{
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char str[]="12345abcde";
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unsigned int k,n;
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scanf("%d,%d",&k,&n);
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if(k+n-1<=strlen(str))
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{ fun(str,k,n);
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puts(str); }
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else
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printf("所输入的k,n值不合适！\n");
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return 0;
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}
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```
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### C语言-3
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```c
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/*------------------------------------------------------------------
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功能：编程统计一个字符串中的字母、数字、空格和其它字符的个数。
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---------------------------------------------------------------------*/
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#include <stdio.h>
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void fun(char s[],int b[])
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{
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int i;
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/**********Program**********/
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i=0;
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while(s[i] != '\0'){
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if(s[i] >= 'a' && s[i] <= 'z' || s[i] >= 'A' && s[i] <= 'Z'){
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b[0]++;
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}else if(s[i] >= '0' && s[i] <= '9'){
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b[1]++;
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}else if(s[i] == ' '){
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b[2]++;
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}else{
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b[3]++;
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}
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i++;
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}
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/********** End **********/
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}
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main ()
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{
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char s1[80];int a[4]={0};
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int k;
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void fun(char s[],int b[]) ;
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gets(s1);
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fun(s1,a);
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puts(s1);
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for(k=0;k<4;k++)
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printf("%4d",a[k]);
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}
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```
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### C语言-4
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```c
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/*------------------------------------------------------------------------
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程序功能：从键盘输入三个整数，比较三个数并显示相应信息，具体如下：
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（1）如果三个数都相等，显示"***"；
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（2）如果三个数中只有某两个数相等，显示"@@"；
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（3）如果三个数互不相等，则显示"&"。
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（输出要换行）
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------------------------------------------------------------------------
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注意：部分源程序给出如下。请勿改动主函数main或其它函数中给出的内容，仅在
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Program-End之间删除【?】填入若干语句。不要删除标志否则不得分。
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----------------------------------------------------------------------*/
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#include<stdio.h>
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int main()
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{
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int a,b,c;
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scanf("%d%d%d",&a,&b,&c);
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if(a==b && b==c)
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printf("***\n");
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/**********Program**********/
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else if(a==b || b==c || a==c)
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/********** End **********/
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printf("@@\n");
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else printf("&\n");
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return 0;
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}
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```
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### MySQL-1
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```sql
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#1
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CREATE TABLE t_hotel_manager(
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mid INT PRIMARY KEY,
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hid INT NOT NULL,
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mname VARCHAR(10) NOT NULL,
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mage INT NOT NULL,
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mgender ENUM('男', '女', '未知'),
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telephone VARCHAR(11)
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);
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#2
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#使用MODIFY添加主键字段为自动增长
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ALTER TABLE t_hotel_manager MODIFY mid INT AUTO_INCREMENT;
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#设置自增起始值
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ALTER TABLE t_hotel_manager AUTO_INCREMENT = 1000;
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#3
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INSERT INTO t_hotel_manager()
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VALUES(DEFAULT, 10001, '王璐', 32, '女', NULL);
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#4
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CREATE TABLE t_hotel_bak AS
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SELECT *
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FROM t_hotel;
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#5
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UPDATE t_client c
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SET c.integral = c.integral + 100
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WHERE c.cname LIKE '姚%';
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#6 tj11
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SELECT c.cname, SUM(r.price)
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FROM t_booking b, t_client c, t_room r
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WHERE b.cid = c.cid AND b.rid = r.rid
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GROUP BY c.cid
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ORDER BY 2 DESC
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LIMIT 9, 1;
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#7 tj12
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SELECT h.hname, r.price
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FROM t_hotel h, t_room r
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WHERE h.hid = r.hid AND r.rname = '大床房' AND r.price = (
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SELECT MAX(price)
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FROM t_room
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WHERE rname = '大床房'
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);
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#8 tj13
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SELECT h.hname, r.rname, r.price
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FROM t_room r
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LEFT JOIN t_booking b ON r.rid = b.rid
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INNER JOIN t_hotel h ON r.hid = h.hid
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WHERE b.bid IS NULL;
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#9 视图
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CREATE VIEW v_tongji AS
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SELECT h.hname, SUM(r.price)
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FROM t_hotel h, t_booking b, t_room r
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WHERE h.hid = r.hid AND b.rid = r.rid
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GROUP BY h.hid;
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```
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### MySQL-2
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```sql
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#1添加主键
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ALTER TABLE tb_student ADD PRIMARY KEY(student_id);
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#2设置默认值
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ALTER TABLE tb_student ALTER gender SET DEFAULT '男';
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#3 插入记录
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INSERT INTO tb_student()
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VALUES(10025, '张三', DEFAULT, '2012-10-01', 1001);
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#4 更新记录
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UPDATE tb_teacher t
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SET t.teacher_age = 36
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WHERE t.teacher_name = '王老师';
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#5 tj11
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SELECT MAX(t.teacher_age)
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FROM tb_teacher t;
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#6 tj12
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SELECT c.class_name, s.student_name, s.gender
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FROM tb_teacher t, tb_student s, tb_class C
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where s.class_id = c.class_id AND c.teacher_id = t.teacher_id;
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#7 视图
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CREATE VIEW v_teacher AS
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SELECT c.class_name, t.teacher_name, COUNT(*)
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FROM tb_teacher t, tb_student s, tb_class C
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WHERE s.class_id = c.class_id AND c.teacher_id = t.teacher_id
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GROUP BY c.class_id, t.teacher_name;
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#8
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DELIMITER $$
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DROP TRIGGER IF EXISTS tri_updateTeacherAge;
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CREATE TRIGGER tri_updateTeacherAge
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BEFORE UPDATE ON tb_teacher
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FOR EACH ROW
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BEGIN
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IF NEW.teacher_age < 30 THEN
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SET NEW.age = '青年';
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ELSEIF NEW.teacher_age < 50 THEN
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SET NEW.age = '中年';
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ELSE
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SET NEW.age = '老年';
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END IF;
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END $$
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DELIMITER ;
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#9
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DELIMITER $$
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DROP PROCEDURE IF EXISTS Pro_GetOldClassStudent;
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CREATE PROCEDURE Pro_GetOldClassStudent(IN in_class_id INT, OUT out_student_name VARCHAR(50))
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BEGIN
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SELECT s.student_name INTO out_student_name
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FROM tb_student s, tb_class c
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WHERE s.class_id = c.class_id AND c.class_id = in_class_id
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ORDER BY s.birthday
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LIMIT 1;
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END $$
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DELIMITER ;
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CALL Pro_GetOldClassStudent(1001, @result);
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SELECT @result;
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```
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