ruuning letter 完成

level1/p01_runningLetter/level1_1.c

@@ -0,0 +1,32 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<windows.h>
+#define WIDTH 20
+int main()
+{
+	int x,y,z,s,w;
+	char a[WIDTH];
+	for(x=1;x<=100;x++)
+
+	{
+	if (x%2==1)
+	    {
+		w=1;	
+		}
+	else
+		{
+		w=-1;
+		}
+	{for(y=WIDTH*(1-w)/2;y!=WIDTH*(1+w)/2;y+=w)
+		{for(z=0;z<y;z++)			
+			{
+			putchar(' ');
+		    }
+		printf("%c\n",'A');
+		Sleep(100);
+		system("cls");	
+		}
+	}
+
+	}
+}

level1/p02_isPrime/level1_2.c

@@ -0,0 +1,25 @@
+#include<stdio.h>
+#include<math.h>
+int main()
+{
+	int x,y,z,w;
+	w=0;
+	printf("Plesse input a integer:\n");
+	scanf("%d",&x);
+	y=sqrt(x);
+	for(z=2;z<=y;z++)
+	{
+		if((x/z*z)==x)
+		w=1;	
+	}
+
+	if(w!=0)
+	{
+		printf("%d is not prime\n",x);
+	}
+	else
+	{
+		printf("%d is prime\n",x);
+ 	}
+    return 0;
+}

level1/p03_Diophantus/level1_3.c

@@ -0,0 +1,11 @@
+#include<stdio.h>
+int main()
+{
+	float x;
+	for(x=4;x<200;x++)
+	if(x/6+x/12+x/7+5+x/2+4==x)
+	{
+		printf("age=%.0f\n",x);
+	}
+	return 0;
+}

level1/p04_ narcissus/level1_4.c

@@ -0,0 +1,17 @@
+#include<stdio.h>
+int main()
+{
+	int x,a,b,c;
+	printf("Narcissistic numbes between 100~999 are as follows:");
+	for(x=100;x<=999;x++)
+	{
+		a=x/100;
+		b=(x-a*100)/10;
+		c=x%10;
+		if(a*a*a+b*b*b+c*c*c==x)
+		{
+			printf(" %d",x);
+		}	
+	}
+	return 0;
+}

level1/p05_allPrimes/main.c

@@ -0,0 +1,25 @@
+#include<stdio.h>
+#include<math.h>
+#include<time.h>
+#include"prime_under_1000.h"
+
+int main()
+{
+	int i,w;//i from 1 to 1000;w=return value 
+	time_t begin,end;
+
+	begin=clock();
+
+	printf("2");//other primes are all odd
+	for(i=3;i<=1000;i+=2)
+	{ 
+		if (prime(i)==0)
+		{
+			printf(",%d",i);	
+		} 
+	}
+
+	end=clock();
+	printf("\n\nTime used=%dms",end-begin);
+	return 0;
+}

level1/p05_allPrimes/prime_under_1000.h

@@ -0,0 +1,18 @@
+int prime(int x)
+{
+	int a[]={3,5,7,11,13,17,19,23,29,31,37};//sqrt(1000)<37
+	int sqrt_x,i,w;
+
+	sqrt_x=sqrt(x)+1;
+	w=0;
+
+	for(i=0;a[i]<=sqrt_x;i++)
+	{	
+		if(x%a[i]==0)
+		{
+			w=1;
+			break;
+		}
+	}
+	return w;
+}

level1/p06_Goldbach/Goldbach.h

@@ -0,0 +1,24 @@
+int Goldbach(int x)
+{
+	int a[]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97};
+	int i_1,i_2;
+	int w=0;
+
+	for(i_1=0;i_1<=24;i_1++)
+	{
+		for(i_2=0;i_2<=24;i_2++)
+		{
+			if(x==a[i_1]+a[i_2])
+			{
+				printf("%d=%d+%d\n",x,a[i_1],a[i_2]);
+				w++;
+			}
+		}
+	}
+
+	if(w==0)
+	{
+		printf("Goldbach for %d is wrong!",x);
+	}
+}
+

level1/p06_Goldbach/level1_6.dev

@@ -0,0 +1,72 @@
+[Project]
+FileName=level1_6.dev
+Name=��Ŀ3
+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=
+UseCustomMakefile=0
+CustomMakefile=
+CommandLine=
+Folders=
+IncludeVersionInfo=0
+SupportXPThemes=0
+CompilerSet=0
+CompilerSettings=0000000000000000000000000
+UnitCount=2
+
+[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.c
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+
+[Unit2]
+FileName=Goldbach.h
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+

level1/p06_Goldbach/main.c

@@ -0,0 +1,14 @@
+#include<stdio.h>
+#include<math.h>
+#include"Goldbach.h"
+
+int main()
+{
+	int i;
+	for(i=4;i<=100;i+=2)
+	{
+		Goldbach(i);
+		printf("\n");
+	}
+	return 0 ;
+} 

level1/p07_encrypt_decrypt/Makefile.win

@@ -0,0 +1,28 @@
+# Project: decrypt
+# Makefile created by Dev-C++ 5.11
+
+CPP      = g++.exe -D__DEBUG__
+CC       = gcc.exe -D__DEBUG__
+WINDRES  = windres.exe
+OBJ      = decrypt.o
+LINKOBJ  = decrypt.o
+LIBS     = -L"D:/Dev-Cpp/MinGW64/lib" -L"D:/Dev-Cpp/MinGW64/x86_64-w64-mingw32/lib" -static-libgcc -g3
+INCS     = -I"D:/Dev-Cpp/MinGW64/include" -I"D:/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"D:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include"
+CXXINCS  = -I"D:/Dev-Cpp/MinGW64/include" -I"D:/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"D:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"D:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++"
+BIN      = decrypt.exe
+CXXFLAGS = $(CXXINCS) -g3
+CFLAGS   = $(INCS) -g3
+RM       = rm.exe -f
+
+.PHONY: all all-before all-after clean clean-custom
+
+all: all-before $(BIN) all-after
+
+clean: clean-custom
+	${RM} $(OBJ) $(BIN)
+
+$(BIN): $(OBJ)
+	$(CPP) $(LINKOBJ) -o $(BIN) $(LIBS)
+
+decrypt.o: decrypt.c
+	$(CPP) -c decrypt.c -o decrypt.o $(CXXFLAGS)

level1/p07_encrypt_decrypt/decrypt.c

@@ -0,0 +1,23 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#include"function_2.h"
+
+int main()
+{
+	char mingwen[200]={0},key[200]={0},miwen[200]={0};
+	char ch;
+	int i;
+
+	printf("Please input the key\n");
+	input(key);
+	printf("Please input what you want to derypt��\n");
+	input(miwen);
+
+	decrypt(key,miwen,mingwen);
+	printf("mingwen:\n");
+	output(mingwen);
+
+	return 0; 
+
+ } 

level1/p07_encrypt_decrypt/decrypt.dev

@@ -0,0 +1,72 @@
+[Project]
+FileName=decrypt.dev
+Name=decrypt
+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=
+UseCustomMakefile=0
+CustomMakefile=
+CommandLine=
+Folders=
+IncludeVersionInfo=0
+SupportXPThemes=0
+CompilerSet=1
+CompilerSettings=0000000000000000001000000
+UnitCount=2
+
+[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
+
+[Unit2]
+FileName=function_2.h
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+
+[Unit1]
+FileName=decrypt.c
+CompileCpp=1
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+

level1/p07_encrypt_decrypt/decrypt.layout

@@ -0,0 +1,13 @@
+[Editors]
+Order=0,1
+Focused=1
+[Editor_0]
+CursorCol=2
+CursorRow=16
+TopLine=1
+LeftChar=1
+[Editor_1]
+CursorCol=40
+CursorRow=53
+TopLine=32
+LeftChar=1