126 lines
2.9 KiB
Markdown
126 lines
2.9 KiB
Markdown
## C语言-1
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```c
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/*------------------------------------------------------------------------------
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【程序设计】程序实现的功能是：输入字符串（不包含空格），删除其中的数字字符后输出。
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输入输出如下：
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hello 123 world
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去掉数字后的字符串为：hello world
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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，否则不得分。
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仅在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 main()
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{
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char a[100],b[100];
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int l,i,j;
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gets(a);
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l=strlen(a);
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j=0;
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/**********Program**********/
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for(i=0;i<l;i++){
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if(a[i] > '9' || a[i] < '0'){
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b[j++]=a[i];
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}
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}
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/********** End **********/
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b[j]='\0';
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printf("去掉数字后的字符串为：");
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puts(b);
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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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【程序设计】输入一个整数k, S=1*2*3*…*n，求S不大于k时最大的n。
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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，否则不得分。
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仅在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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void main()
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{
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int i=1,k,s=1;
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/**********Program**********/
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scanf("%d", &k);
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while(1){
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if(s > k){
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break;
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}
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i++;
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s*=i;
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}
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i--;
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/********** End **********/
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printf("%d\n",i);
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}
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```
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## MySQL
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```sql
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#1
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ALTER TABLE t_hotel ADD `level` CHAR(10) DEFAULT '暂无评级';
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#2
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INSERT INTO t_hotel()
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VALUES(DEFAULT, '苹果酒店', '无名街356号', '138-1258-0000', '五星');
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#3
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UPDATE t_room r
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SET r.price = r.price+100
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WHERE r.hid = (
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SELECT hid
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FROM t_hotel
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WHERE hname = '香蕉酒店'
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);
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#4
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SELECT c.cname, c.integral,
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IF(c.integral<1000, '普通会员',
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IF(c.integral<3000, '中级会员',
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IF(c.integral<5000, '高级会员', '顶级会员')))
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FROM t_client c;
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#5
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SELECT h.hid, ROUND(AVG(r.price), 2) p
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FROM t_hotel h, t_room r
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WHERE h.hid = r.hid
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GROUP BY h.hid
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ORDER BY p DESC;
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#6
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SELECT c.cid, c.cname, SUM(r.price) s
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FROM t_client c, t_booking b, t_room r
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WHERE c.cid = b.cid AND r.rid = b.rid
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GROUP BY c.cid
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ORDER BY s DESC
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LIMIT 1;
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#7
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CREATE VIEW v_hotel AS
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SELECT DATE_FORMAT(b.btime,'%Y-%m') d, SUM(r.price)
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FROM t_booking b, t_room r
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WHERE b.rid = r.rid
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GROUP BY d;
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#8
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DELIMITER $$
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CREATE TRIGGER tri_updateLevel
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BEFORE UPDATE ON t_client
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FOR EACH ROW
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BEGIN
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IF NEW.integral <2500 THEN
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SET NEW.`level` = '初级会员';
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ELSEIF NEW.integral <5000 THEN
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SET NEW.`level` = '中级会员';
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ELSE
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SET NEW.`level` = '高级会员';
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END IF;
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END $$
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DELIMITER ;
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#9
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``` |