select * FROM student-- 二:查询student表中所有记录select * FROM score WHERE Degree>60 AND Degree<80-- 四:查询Score表中成绩在60到80之间的所有记录SELECT * FROM score WHERE Degree in ('85','86','88'); -- 五:查询Score表中成绩为85,86或88的记录.SELECT * FROM student WHERE Class = '95031' AND
Network Time Limit: 1000MS Memory Limit: 30000K Special Judge http://poj.org/problem?id=1861 Description Andrew is working as system administrator and is planning to establish a new network in his company. There will be N hubs in the compa
作者:何海涛 出处:http://zhedahht.blog.163.com/ 题目:输入数字n,按顺序输出从1最大的n位10进制数.比如输入3,则输出1.2.3一直到最大的3位数即999. 分析:这是一道很有意思的题目.看起来很简单,其实里面却有不少的玄机. 应聘者在解决这个问题的时候,最容易想到的方法是先求出最大的n位数是什么,然后用一个循环从1开始逐个输出.很快,我们就能写出如下代码: // Print numbers from 1 to the maximum number with n
第二十一题 What is the potential problem with the following C program? #include <stdio.h> int main() { ]; printf("Enter the string:"); scanf("%s",str); printf("You entered:%s\n",str); ; } 题目讲解: 易造成数组越界,scanf改成如下形式比较保险 scanf(
B. Lovely Palindromes 题目连接: http://www.codeforces.com/contest/688/problem/B Description Pari has a friend who loves palindrome numbers. A palindrome number is a number that reads the same forward or backward. For example 12321, 100001 and 1 are palin
一.技术总结: 对于哈希字符处理方式,一般是用一个数组存储字符出现的次数,然后再考虑后续. 同时,在输出时,比如这题要输出指定几个字符,我们可以首先统计下这几个字符一共出现的次数sum,然后输出一个就减一个即sum--. 注意使用cin >> str;和getline(cin, str); 二.参考代码: #include<iostream> #include<cstring> using namespace std; int hashTable[256]; int m