first commit

.gitignore

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+*.DS_Store
+
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# DNX
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# TODO: Comment the next line if you want to checkin your web deploy settings
+# but database connection strings (with potential passwords) will be unencrypted
+#*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/packages/*
+# except build/, which is used as an MSBuild target.
+!**/packages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/packages/repositories.config
+# NuGet v3's project.json files produces more ignoreable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+node_modules/
+orleans.codegen.cs
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+*.mdf
+*.ldf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# CodeRush
+.cr/
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc

main.cc

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+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+int splitFile(const char* path, int count,  const char* savename)
+{
+	FILE* F = fopen(path, "rb");
+	if (F == NULL)
+	{
+		return  -1;
+	}
+	else
+	{
+		fseek(F, 0, SEEK_END);//将文件指针移动到文件末尾
+		int length = ftell(F);//计算文件指针到文件开头的字节数，即就是文件大小
+		int yushu = length % count;//余数
+		int size = length / count; //前面count-1份每一分大小为size，最后一份为size + yushu
+		for (int i = 1; i <= count; i++)
+		{
+			char savefile[100];
+			sprintf(savefile, "%s%d", savename,i);
+			printf("%s\n", savefile);
+			FILE* P = fopen(savefile, "wb");
+			if (P == NULL)
+			{
+				fclose(F);
+				return -1;
+			}
+			else
+			{
+				fseek(F, (i - 1) * size, SEEK_SET);
+				if (i == count)
+				{
+					for (int j = 0; j <= size + yushu; j++)
+					{
+						int c = fgetc(F);
+						fputc(c, P);
+					}
+				}
+				else
+				{
+					for (int j = 0; j < size; j++)
+					{
+						int c = fgetc(F);
+						fputc(c, P);
+					}
+				}
+
+
+			}
+			fclose(P);
+		}
+		fclose(F);
+		return 0;
+	}
+}
+/*合并文件，合并为一个大文件bigfile返回-1表示分割失败,0表示成功*/
+int mergeFile(const char* savename, int count, const char* bigfile)
+{
+
+	FILE* BF = fopen(bigfile, "wb");
+	if (BF == NULL)
+	{
+		printf("open file failed");
+		return -1;
+	}
+	else
+	{
+		for (int i = 0; i < count; i++)
+		{
+			char savefile[100];
+			sprintf(savefile, "%s%d",savename,i+1);
+
+			FILE* P = fopen(savefile, "rb");
+			if (P == NULL)
+			{
+				printf("open %s failed", savefile);
+				fclose(BF);
+				return -1;
+			}
+			else
+			{
+				int c = fgetc(P);
+				while (c != EOF)
+				{
+					fputc(c, BF);
+					c = fgetc(P);
+				}
+			}
+			fclose(P);
+		}
+	}
+	fclose(BF);
+	return 0;
+}
+int main(int argc, char* argv[])
+{
+	if (argc < 4) {
+		printf("splitmerge.exe split bigfile 10\nsplitmerge.exe merge bigfile 10\n");
+		return 0;
+	}
+	if (strcmp(argv[1], "split") == 0) {
+
+		splitFile(argv[2], atoi(argv[3]), "funnywolf.split");
+		printf("split file finish");
+		return 0;
+	}
+	else if (strcmp(argv[1], "merge") == 0) {
+		mergeFile("funnywolf.split", atoi(argv[3]), argv[2]);
+		printf("merge file finish");
+		return 0;
+	}
+}