C++

C + + Smart pointersFlyfish 2015-3-1Display memory management with raw pointers has a performance advantage, but is prone to error. such as wild pointers, repeated releases, content leaks, etc.In order to support a better memory management mechanism

#include int Main () { int flag[1000]={0}; int tmp,i; for (i=0;iV2.0:#include int Main (){ int flag[]={0}; int tmp,i; //for (i=0;i printf("How many numbers?\n"); scanf("%d", &tmp); while(tmp--){ scanf("%d", &i);flag[i]++;}tmp= + ;

Today saw Jetlian's blog, oneself also realized a bit, the general same, partially modified a bit. There are mistakes in the hope of the generous enlighten, thank you!Http://www.cnblogs.com/jetlian/archive/2015/03/01/4307584.html1 class Program2

The first thing you know about computersIn character1. The computer can only recognize binary.2.1 bytes represents 8 bits 1Byte (bytes) =8bits (bits). Usually think of words to explain the smallest unit of computer,3. A 16 binary is equivalent to 4

1#include 2#include 3 4 intMainintargcChar*argv[])5 {6 if(ARGC = =2)//print to standard output in a file7 {8FILE *FP;9 if( ! (fp = fopen (argv[1],"R" )) )Ten { Onefprintf (stderr,"cannot open file%s.", argv[1]); AExit (-1); -

#include using namespace std;//function definition #define PRINTARR (Arr,n,format) printf ("%s:", #arr), for (int i = 0;i#defineN 100intArr1[n];floatArr2[n];intMain () {intn=5; for(inti =0; i5*i;arr2[i]=10.0*i;} Printarr (Arr1,n,"%d"); //function

User Login-creator ProgrammingDraw the following interface:At compile time, the header file of the following content is automatically generated ui_mainwindow.h/********************************************************************************* * Form

C + + Supplements-Multithreading: critical section resolves mutex for sub-threadsPrefaceIn order to solve the mutex problem of sub-threads, the Windows system presents the concept of critical segment or critical section (critical_section). It has

This article address: http://www.cnblogs.com/archimedes/p/c11-lambda.html, reprint please indicate source address.A lambda expression is an anonymous function , which is named after the lambda calculus in mathematics and directly corresponds to the

The main function realizes whether remote files (pictures, etc.) exist. And this function, using a string URL as its parameters (a remote image URL), through the WebRequest and WebResponse objects to achieve this function, the specific code is as

1. Adding a WCF service library2. Register the route in globalROUTETABLE.ROUTES.ADD (New Serviceroute ("API", new Webservicehostfactory (), typeof (API). (OPENAPI.OPENAPI)));3, add the following configuration in Webconfig 　　Write

Using System;Using System.Collections.Generic;Using System.Diagnostics;Using System.Text;Namespace MYTest{Class Program{static void Main (string[] args){/* Console.WriteLine ("Please Enter Judgment year:");int x = Convert.ToInt32 (Console.ReadLine ()

1019. General Palindromic Number (20) A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number. All single digit numbers are palindromic numbers. Although

[POJ] 3277. City Horizon Description Farmer John has taken his cows on a trip to the city! As the sun sets, the cows gaze at the city horizon and observe the beautiful silhouettes formed by the rectangular buildings. The entire horizon is

Abstract Factory of c ++ templates   1. Generic Implementation of abstract factories in Design Patterns 2. For more information about how to use c ++ to automatically generate template code, see c ++ generic programming.         /////////////////////

CF 518E (Arthur and Questions-Greedy) E. Arthur and Questionstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard output After bracket sequences Arthur took up number theory. He has got a new favorite

Summary of objective Modern C ++ Item 2, inclutivemoderncFirst, we propose two basic points of view: 1. auto and template parameter type derivation have almost identical rules, so the rules summarized in Item1 are applicable to auto. 2. There is a

Summary of objective Modern C ++ Item 1, inclutivemoderncItem 1: Understand template type deduction. Understanding template type Derivation template　void f(ParamType param); The type deduced for T is dependent not just on the type of expr, but also

Leetcode_2_Add Two Numbers     Add Two NumbersYou are given two linked lists representing two non-negative numbers. the digits are stored in reverse order and each of their nodes contain a single digit. add the two numbers and return it as a linked

POJ 1189-nail and ball (DP) Layer I has 2 * I + 1 possible positions (from 1st vacancies to the last vacant positions total I + 1 and I nail positions ), the numerator that uses d [I] [j] to represent the probability of row I dropping at the