work

level1/p01_runningLetter/Running letter.c

@@ -0,0 +1,27 @@
+#include<stdio.h>
+#include<stdlib.h>
+#define LENGTH 110
+int main(void)
+{
+	int i;
+	int j=0;
+	for(i=0;i<LENGTH;i++)
+	{
+		for(j=0;j<i;j++)
+	{
+		printf(" ");
+	}
+		printf("letter");
+		system("CLS");
+	}
+	for(i=LENGTH;i>0;i--)
+	{
+		for(j=i;j>0;j--)
+		{
+			printf(" ");
+		}
+		printf("letter");
+		system("CLS");
+	}
+	return 0;
+}

level1/p02_isPrime/isPrime.c

@@ -0,0 +1,20 @@
+#include<stdio.h>
+int main(void)
+{
+	int number;
+	int i=2;
+	scanf("%d",&number);
+	for(i=2;i<number;i++)
+	{
+		if(number%i==0)
+		{
+			printf("NotPrime");
+			break;
+		}
+	}
+	if(i==number)
+	{
+		printf("istPrime");
+	}
+	return 0;
+}

level1/p03_Diophantus/Diophantus.c

@@ -0,0 +1,9 @@
+#include<stdio.h>
+int main(void)
+{
+	double age=20;
+	for(age=20;age!=age/6+age/12+age/7+5+age/2+4;age++)
+		printf("%f\n",age);
+	printf("The age is %.0f",age);
+	return 0;
+}

level1/p04_ narcissus/narcissus.c

@@ -0,0 +1,16 @@
+#include<Stdio.h>
+#define MAX 1000
+int main(void)
+{
+	int number;
+	for(number=100;number<1000;number++)
+	{
+		int i=number%10;
+		int j=(number/10)%10;
+		int k=number/100;
+		if(number==i*i*i+j*j*j+k*k*k)
+			printf("%d\n",number);
+	}
+	return 0;
+
+}

level1/p06_Goldbach/GoldBash.c

@@ -0,0 +1,39 @@
+#include<stdio.h>
+#include<math.h>
+char judge(int a);
+int Prime(int b);
+int m,n;
+int main(void)
+{
+	int number,i;
+	for(i=2;i<101;i+=2)
+		{
+			judge(i);
+			printf("%d+%d=%d\n",m,n,i);
+		}
+	return 0;
+}
+char judge(int a)
+{
+	for(m=1;m<a/2+1;m++)
+	{
+		n=a-m;
+		if(Prime(m)&&Prime(n))
+		return;
+	}
+	return;
+}
+int Prime(int b)
+{
+	int i;
+	for(i=2;i<sqrt(b);i++)
+		if(b%i==0)
+		{
+			return 0;
+		}
+		else if((i+1)*(i+1)>b)
+		{
+			return 1;
+		}
+
+}

level1/p07_encrypt_decrypt/Encrypt_decrypt.c

@@ -0,0 +1,45 @@
+#include<stdio.h>
+#include<stdlib.h>
+void Encrypt(char a[]);
+void Decrypt(char b[]);
+char str_ing[50];
+int judge;
+int main(void)
+{
+	printf("Input\n");
+	scanf("%s",str_ing);
+	printf("����������1\n����������2\n�˳�������������\n");
+	scanf("%d",&judge);
+	switch(judge)
+	{
+	case 1:
+		Encrypt(str_ing);
+		break;
+	case 2:
+		Decrypt(str_ing);
+		break;
+	default:
+		exit(0);
+	}
+	return 0;
+}
+void Encrypt(char a[])
+{
+	int j=0;
+	for(j=0;str_ing[j]!='\0';j++)
+	{
+		str_ing[j]-=1;
+	}
+	printf("����Ϊ %s",str_ing);
+	return;
+}
+void Decrypt(char b[])
+{
+	int j=0;
+	for(j=0;str_ing[j]!='\0';j++)
+	{
+		str_ing[j]+=1;
+	}
+	printf("��������Ϊ %s",str_ing);
+	return;
+}

level1/p08_hanoi/Hanoi.md

@@ -0,0 +1,24 @@
+#Hanoi
+	#include<stdio.h>
+	void Hanoi(int n,char A,char B,char C)
+	{
+		if(n==1){
+			printf("将第%d个圆盘从%c移动到%c\n",n,A,C);
+		}
+		else{
+			Hanoi(n-1,A,C,B);
+			printf("将第%d个圆盘从%c移动到%c\n",n,A,C);
+			Hanoi(n-1,B,A,C);
+		}
+	}
+	int main()
+	{
+		int i;
+		scanf("%d",&i);
+		char X='x';
+		char Y='y';
+		char Z='z';
+		Hanoi(i,X,Y,Z);
+		return 0;
+	}
+

level1/p08_hanoi/Tower of Hanoi.c

@@ -0,0 +1,22 @@
+#include<stdio.h>
+void Hanoi(int n,char A,char B,char C)
+{
+	if(n==1){
+		printf("����%d��Բ�̴�%c�ƶ���%c\n",n,A,C);
+	}
+	else{
+		Hanoi(n-1,A,C,B);
+		printf("����%d��Բ�̴�%c�ƶ���%c\n",n,A,C);
+		Hanoi(n-1,B,A,C);
+	}
+}
+int main()
+{
+	int i;
+	scanf("%d",&i);
+	char X='x';
+	char Y='y';
+	char Z='z';
+	Hanoi(i,X,Y,Z);
+	return 0;
+}

level1/p09_maze/maze.c

@@ -0,0 +1,90 @@
+#include<stdio.h>
+#include<stdlib.h>
+int manhang=9;int manlie=8;
+int map[11][11];
+void get(void);                             /*��ʦΪɶ�ҵij�����Ҫ�����²����ƶ�һ����*/
+void print(int a[11][11]);                                           /*�� �� ��*/
+int main(void)
+{
+	int hang=1,lie=1;
+	for(hang=1;hang<=10;hang++)
+	{
+		for(lie=1;lie<=10;lie++)
+		{
+			map[hang][lie]=1;
+		}
+	}
+	map[4][1]=map[4][2]=map[5][2]=map[6][2]=map[6][3]=map[6][4]=0;
+	map[5][4]=map[4][4]=map[3][4]=map[2][4]=map[2][5]=map[2][6]=0;
+	map[2][7]=map[2][8]=map[2][9]=map[3][9]=map[4][9]=map[5][9]=0;
+	map[6][9]=map[7][9]=map[7][8]=map[8][8]=map[9][8]=0;
+	map[3][6]=map[4][6]=map[5][6]=map[6][6]=map[7][6]=0;
+	map[9][8]=2;
+	print(map[11][11]);
+	int judge=1;
+
+	while(judge)
+	{
+		fflush(stdout);
+		get();
+		system("CLS");
+		map[manhang][manlie]=2;
+		map[9][8]=0;
+		print(map[11][11]);
+		if(manhang==10||manhang==1||manlie==1||manlie==10)
+			{
+			judge=0;
+			}
+	}
+	printf("Success\n");
+	getchar();
+	return 0;
+}
+
+void get(void)
+{
+	if(getch()=='w'&&map[manhang-1][manlie]==0)
+	{
+		map[manhang][manlie]=0;
+		manhang-=1;
+	}
+	if(getch()=='s'&&map[manhang+1][manlie]==0)
+	{
+		map[manhang][manlie]=0;
+		manhang+=1;
+	}
+	if(getch()=='a'&&map[manhang][manlie-1]==0)
+	{
+		map[manhang][manlie]=0;
+		manlie-=1;
+	}
+	if(getch()=='d'&&map[manhang][manlie+1]==0)
+	{
+		map[manhang][manlie]=0;
+		manlie+=1;
+	}
+	return;
+}
+
+void print(int a[11][11])
+{
+	int i,j=1;
+	for(i=1;i<11;i++)
+	{
+		for(j=1;j<11;j++)
+		{
+			if(map[i][j]==1)
+			{
+				printf("#");
+			}
+			else if(map[i][j]==0)
+			{
+				printf(" ");
+			}
+			else printf("$");
+		}
+		printf("\n");
+	}
+	printf("\n Get from keyborad \nYou should aim the board for four times\n ");
+	return;
+}