2013

2013/1.cpp

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+#include<bits/stdc++.h>
+using namespace std;
+int main() {
+    int n; scanf("%d", &n);
+    string s;
+    while(n){
+        s+='0'+(n%2);
+        n/=2;
+    }
+    reverse(s.begin(), s.end());
+    cout << s << endl;
+}
+

2013/13-1/13-1.dev

@@ -0,0 +1,62 @@
+[Project]
+FileName=13-1.dev
+Name=13-1
+Type=1
+Ver=2
+ObjFiles=
+Includes=
+Libs=
+PrivateResource=
+ResourceIncludes=
+MakeIncludes=
+Compiler=
+CppCompiler=
+Linker=
+IsCpp=1
+Icon=
+ExeOutput=
+ObjectOutput=
+LogOutput=
+LogOutputEnabled=0
+OverrideOutput=0
+OverrideOutputName=
+HostApplication=
+Folders=
+CommandLine=
+UseCustomMakefile=0
+CustomMakefile=
+IncludeVersionInfo=0
+SupportXPThemes=0
+CompilerSet=0
+CompilerSettings=0000000000000000000000000
+UnitCount=1
+
+[VersionInfo]
+Major=1
+Minor=0
+Release=0
+Build=0
+LanguageID=1033
+CharsetID=1252
+CompanyName=
+FileVersion=
+FileDescription=Developed using the Dev-C++ IDE
+InternalName=
+LegalCopyright=
+LegalTrademarks=
+OriginalFilename=
+ProductName=
+ProductVersion=
+AutoIncBuildNr=0
+SyncProduct=1
+
+[Unit1]
+FileName=main.cpp
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+

2013/13-1/Makefile.win

@@ -0,0 +1,29 @@
+# Project: 13-1
+# Makefile created by Dev-C++ 5.2.0.3
+
+CPP      = g++.exe -D_DEBUG_
+CC       = gcc.exe -D_DEBUG_
+WINDRES  = windres.exe
+OBJ      = main.o $(RES)
+LINKOBJ  = main.o $(RES)
+LIBS     = -L"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/lib" -static-libstdc++ -static-libgcc  
+INCS     = -I"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/include" 
+CXXINCS  = -I"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/include" 
+BIN      = 13-1.exe
+CXXFLAGS = $(CXXINCS)   -g3
+CFLAGS   = $(INCS)   -g3
+RM       = rm -f
+
+.PHONY: all all-before all-after clean clean-custom
+
+all: all-before 13-1.exe all-after
+
+
+clean: clean-custom
+	${RM} $(OBJ) $(BIN)
+
+$(BIN): $(OBJ)
+	$(CPP) $(LINKOBJ) -o "13-1.exe" $(LIBS)
+
+main.o: main.cpp
+	$(CPP) -c main.cpp -o main.o $(CXXFLAGS)

2013/13-1/main.cpp

@@ -0,0 +1,18 @@
+#include <iostream>
+#include<stack> 
+using namespace std; 
+/*1、输入任意一个十进制整数，转换为二进制数串显示出来。*/
+int main() {
+	stack<int> s;  //建栈
+	int n;
+	cin>>n;  //输入一个十进制数
+	while(n!=0){
+		s.push(n%2);  //将余数存入栈中
+		n/=2;
+	}
+	while(s.empty()!=true){
+		cout<<s.top();  //输出栈顶元素
+		s.pop();  //将栈顶元素弹出
+	}
+	return 0;
+}

2013/13-2/13-2.dev

@@ -0,0 +1,62 @@
+[Project]
+FileName=13-2.dev
+Name=13-2
+Type=1
+Ver=2
+ObjFiles=
+Includes=
+Libs=
+PrivateResource=
+ResourceIncludes=
+MakeIncludes=
+Compiler=
+CppCompiler=
+Linker=
+IsCpp=1
+Icon=
+ExeOutput=
+ObjectOutput=
+LogOutput=
+LogOutputEnabled=0
+OverrideOutput=0
+OverrideOutputName=
+HostApplication=
+Folders=
+CommandLine=
+UseCustomMakefile=0
+CustomMakefile=
+IncludeVersionInfo=0
+SupportXPThemes=0
+CompilerSet=0
+CompilerSettings=0000000000000000000000000
+UnitCount=1
+
+[VersionInfo]
+Major=1
+Minor=0
+Release=0
+Build=0
+LanguageID=1033
+CharsetID=1252
+CompanyName=
+FileVersion=
+FileDescription=Developed using the Dev-C++ IDE
+InternalName=
+LegalCopyright=
+LegalTrademarks=
+OriginalFilename=
+ProductName=
+ProductVersion=
+AutoIncBuildNr=0
+SyncProduct=1
+
+[Unit1]
+FileName=main.cpp
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+

2013/13-2/Makefile.win

@@ -0,0 +1,29 @@
+# Project: 13-2
+# Makefile created by Dev-C++ 5.2.0.3
+
+CPP      = g++.exe -D_DEBUG_
+CC       = gcc.exe -D_DEBUG_
+WINDRES  = windres.exe
+OBJ      = main.o $(RES)
+LINKOBJ  = main.o $(RES)
+LIBS     = -L"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/lib" -static-libstdc++ -static-libgcc  
+INCS     = -I"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/include" 
+CXXINCS  = -I"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/include" 
+BIN      = 13-2.exe
+CXXFLAGS = $(CXXINCS)   -g3
+CFLAGS   = $(INCS)   -g3
+RM       = rm -f
+
+.PHONY: all all-before all-after clean clean-custom
+
+all: all-before 13-2.exe all-after
+
+
+clean: clean-custom
+	${RM} $(OBJ) $(BIN)
+
+$(BIN): $(OBJ)
+	$(CPP) $(LINKOBJ) -o "13-2.exe" $(LIBS)
+
+main.o: main.cpp
+	$(CPP) -c main.cpp -o main.o $(CXXFLAGS)

2013/13-2/main.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include<math.h>
+using namespace std;
+/*2、设想一下，32位整数int能表示最大多大数的阶乘。
+假设y=x!（阶乘），在32位整数范围内，x最大为多少，y能达到最大值，而能保证乘法不溢出。 */
+
+int main() {
+	int sum=1,i; 
+	int temp;
+	for (i=2;;i++)
+	{
+		temp=sum*i;  //i的阶乘
+		if (temp/sum!=i)  //如果溢出了就跳出循环
+			break;
+		sum=temp;
+	}
+	cout<<i-1<<"!="<<sum<<endl;  //输出能达到的阶乘的最大值的数
+	return 0;
+}

2013/13-3/13-3.dev

@@ -0,0 +1,62 @@
+[Project]
+FileName=13-3.dev
+Name=13-4
+Type=1
+Ver=2
+ObjFiles=
+Includes=
+Libs=
+PrivateResource=
+ResourceIncludes=
+MakeIncludes=
+Compiler=
+CppCompiler=
+Linker=
+IsCpp=1
+Icon=
+ExeOutput=
+ObjectOutput=
+LogOutput=
+LogOutputEnabled=0
+OverrideOutput=0
+OverrideOutputName=
+HostApplication=
+Folders=
+CommandLine=
+UseCustomMakefile=0
+CustomMakefile=
+IncludeVersionInfo=0
+SupportXPThemes=0
+CompilerSet=0
+CompilerSettings=0000000000000000000000000
+UnitCount=1
+
+[VersionInfo]
+Major=1
+Minor=0
+Release=0
+Build=0
+LanguageID=1033
+CharsetID=1252
+CompanyName=
+FileVersion=
+FileDescription=Developed using the Dev-C++ IDE
+InternalName=
+LegalCopyright=
+LegalTrademarks=
+OriginalFilename=
+ProductName=
+ProductVersion=
+AutoIncBuildNr=0
+SyncProduct=1
+
+[Unit1]
+FileName=main.cpp
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+

2013/13-3/Makefile.win

@@ -0,0 +1,29 @@
+# Project: 13-4
+# Makefile created by Dev-C++ 5.2.0.3
+
+CPP      = g++.exe -D_DEBUG_
+CC       = gcc.exe -D_DEBUG_
+WINDRES  = windres.exe
+OBJ      = main.o $(RES)
+LINKOBJ  = main.o $(RES)
+LIBS     = -L"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/lib" -static-libstdc++ -static-libgcc  
+INCS     = -I"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/include" 
+CXXINCS  = -I"E:/Ѹ������/DevCpp/Dev-Cpp/MinGW32/include" 
+BIN      = 13-3.exe
+CXXFLAGS = $(CXXINCS)   -g3
+CFLAGS   = $(INCS)   -g3
+RM       = rm -f
+
+.PHONY: all all-before all-after clean clean-custom
+
+all: all-before 13-3.exe all-after
+
+
+clean: clean-custom
+	${RM} $(OBJ) $(BIN)
+
+$(BIN): $(OBJ)
+	$(CPP) $(LINKOBJ) -o "13-3.exe" $(LIBS)
+
+main.o: main.cpp
+	$(CPP) -c main.cpp -o main.o $(CXXFLAGS)

2013/13-3/main.cpp

@@ -0,0 +1,43 @@
+#include <iostream>
+#include<string> 
+using namespace std;
+/*3、	编程输入一个信用卡号码，输出合法性校验结果。Luhn算法可校验信用卡号码的合法性，
+信用卡号码只能由0-9的数字组成，通常16-19位长。
+（1）	从卡号最后一位数字开始逆向将奇数位（1、3、5等）相加。
+（2）	从卡号最后一位数字开始，逆向将偶数位数字，先乘以2（如果乘积为两位数，则将其减去9），再求和。
+（3）	将奇数位总和加上偶数位总和，结果应能被10整除。
+例如：5432123456788881合法。你若输错一位就不合法。
+*/
+
+int main() {
+	string s;
+	int sum1=0,sum2=0,sum=0;  //sum1为奇数位和，sum2为偶数位数字乘2相加的和，sum为总和	
+	int t=0;
+	cin>>s;
+	if(s.length()>=16&&s.length()<=19){
+		for(int i=s.length()-1;i>=0;i--){
+			if(t%2!=0){  //奇数位相加
+				sum1+=(s[i]-'0');
+			}if(t%2==0){  //偶数位相加
+				if((s[i]-'0')*2>=10)  //若乘积为两位数，则将其减去9再相加	
+					sum2=sum2+((s[i]-'0')*2-9);  
+				else
+					sum2+=(s[i]-'0'); 
+			}
+			t++;
+		//cout<<"t="<<t<<" ";//调试可用
+			}
+		sum=sum1+sum2;
+	//cout<<"sum1="<<sum1<<";sum2="<<sum2<<endl;//调试可用
+		if(sum%10==0){  //能被10整除
+			//cout<<sum<<endl;
+			cout<<"信用卡号码合法";
+		}else{
+			//cout<<sum<<endl;
+			cout<<"信用卡号码不合法";
+		}
+	}else{
+		cout<<"信用卡号长度不合法！！";
+	}
+	return 0;
+}